diff --git a/opac_schema/v1/models.py b/opac_schema/v1/models.py
index 5632bfa..51da89e 100644
--- a/opac_schema/v1/models.py
+++ b/opac_schema/v1/models.py
@@ -924,6 +924,15 @@ def csl_json(self, site_domain="https://www.scielo.br"):
 
         data_parts = [self.issue.year, month] if month else [self.issue.year]
 
+        fpage_lpage = [] 
+        if self.fpage != '' and self.fpage: 
+            fpage_lpage.append(self.fpage)
+
+        if self.lpage != '' and self.lpage:
+            fpage_lpage.append(self.lpage)
+        
+        page = self.elocation if self.elocation else "-".join(fpage_lpage)
+        
         return [
             {
                 "id": self._id,
@@ -941,7 +950,7 @@ def csl_json(self, site_domain="https://www.scielo.br"):
                         data_parts
                     ]
                 },
-                "page": self.elocation,
+                "page": page,
                 "publisher": self.journal.publisher_name,
                 "title": self.title,
                 "type": "article-journal",  # This must in future equalize with https://github.com/scieloorg/scielo_publishing_schema/blob/master/docs/source/tagset/elemento-article.rst and https://github.com/citation-style-language/schema/wiki/Data-Model-and-Mappings
diff --git a/setup.py b/setup.py
index 3bd5afa..a43f4f9 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
 
 setup(
     name="Opac Schema",
-    version='2.65',
+    version='2.66',
     description="Schema of SciELO OPAC",
     author="SciELO",
     author_email="dev@scielo.org",
diff --git a/tests/test_article.py b/tests/test_article.py
index cb4e6c9..eb41d61 100644
--- a/tests/test_article.py
+++ b/tests/test_article.py
@@ -591,7 +591,7 @@ def test_if_csl_json_property_return_correct_items(self):
         article_doc = Article(**article_data)
         article_doc.save()
         
-        self.assertEqual(article_doc.csl_json, [{'id': '2918f62938de499ba0af74932d0fbee5', 'DOI': '10.1590/2175-8239-JBN-2020-0050', 'URL': 'https://doi.org/10.1590/2175-8239-JBN-2020-0050', 'ISSN': '2179-975X', 'author': [{'family': 'Miola', 'given': 'Brígida'}, {'family': 'Frota', 'given': 'Maria Myrian Melo'}, {'family': 'Oliveira', 'given': 'André Gadelha de'}, {'family': 'Uchôa', 'given': 'Kênio Monteles'}, {'family': 'Leandro Filho', 'given': 'Francisco de Assis'}], 'container-title': 'Acta Amazonica', 'container-title-short': 'Acta Amaz.', 'issue': 'Acta Amaz., 2018 123(9999)', 'issued': {'date-parts': [[2018, 9]]}, 'page': '@location', 'publisher': 'Instituto Nacional de Pesquisas da Amazônia', 'title': 'Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome', 'type': 'article-journal', 'volume': '123'}])
+        self.assertEqual(article_doc.csl_json(), [{'id': '2918f62938de499ba0af74932d0fbee5', 'DOI': '10.1590/2175-8239-JBN-2020-0050', 'URL': 'https://doi.org/10.1590/2175-8239-JBN-2020-0050', 'ISSN': '2179-975X', 'author': [{'family': 'Miola', 'given': 'Brígida'}, {'family': 'Frota', 'given': 'Maria Myrian Melo'}, {'family': 'Oliveira', 'given': 'André Gadelha de'}, {'family': 'Uchôa', 'given': 'Kênio Monteles'}, {'family': 'Leandro Filho', 'given': 'Francisco de Assis'}], 'container-title': 'Acta Amazonica', 'container-title-short': 'Acta Amaz.', 'issue': 'Acta Amaz., 2018 123(9999)', 'issued': {'date-parts': [[2018, 9]]}, 'page': '@location', 'publisher': 'Instituto Nacional de Pesquisas da Amazônia', 'title': 'Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome', 'type': 'article-journal', 'volume': '123'}])
 
     def test_if_csl_json_property_return_correct_without_common_on_authors(self):
         journal_doc = self._create_dummy_journal()
@@ -619,7 +619,7 @@ def test_if_csl_json_property_return_correct_without_common_on_authors(self):
         
         article_doc = Article(**article_data)
         
-        self.assertEqual(article_doc.csl_json, [{'id': '2918f62938de499ba0af74932d0fbee5', 'DOI': '10.1590/2175-8239-JBN-2020-0050', 'URL': 'https://doi.org/10.1590/2175-8239-JBN-2020-0050', 'ISSN': '2179-975X', 'author': [{'family': 'Miola Brígida', 'given': 'Miola Brígida'}, {'family': 'Frota Maria Myrian Melo', 'given': 'Frota Maria Myrian Melo'}, {'family': 'Oliveira André Gadelha de', 'given': 'Oliveira André Gadelha de'}, {'family': 'Uchôa Kênio Monteles', 'given': 'Uchôa Kênio Monteles'}, {'family': 'Leandro Filho Francisco de Assis', 'given': 'Leandro Filho Francisco de Assis'}], 'container-title': 'Acta Amazonica', 'container-title-short': 'Acta Amaz.', 'issue': 'Acta Amaz., 2018 123(9999)', 'issued': {'date-parts': [[2018, 9]]}, 'page': '@location', 'publisher': 'Instituto Nacional de Pesquisas da Amazônia', 'title': 'Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome', 'type': 'article-journal', 'volume': '123'}])
+        self.assertEqual(article_doc.csl_json(), [{'id': '2918f62938de499ba0af74932d0fbee5', 'DOI': '10.1590/2175-8239-JBN-2020-0050', 'URL': 'https://doi.org/10.1590/2175-8239-JBN-2020-0050', 'ISSN': '2179-975X', 'author': [{'family': 'Miola Brígida', 'given': 'Miola Brígida'}, {'family': 'Frota Maria Myrian Melo', 'given': 'Frota Maria Myrian Melo'}, {'family': 'Oliveira André Gadelha de', 'given': 'Oliveira André Gadelha de'}, {'family': 'Uchôa Kênio Monteles', 'given': 'Uchôa Kênio Monteles'}, {'family': 'Leandro Filho Francisco de Assis', 'given': 'Leandro Filho Francisco de Assis'}], 'container-title': 'Acta Amazonica', 'container-title-short': 'Acta Amaz.', 'issue': 'Acta Amaz., 2018 123(9999)', 'issued': {'date-parts': [[2018, 9]]}, 'page': '@location', 'publisher': 'Instituto Nacional de Pesquisas da Amazônia', 'title': 'Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome', 'type': 'article-journal', 'volume': '123'}])
 
     def test_if_csl_json_property_return_correct_without_authors(self):
         journal_doc = self._create_dummy_journal()
@@ -641,7 +641,7 @@ def test_if_csl_json_property_return_correct_without_authors(self):
         
         article_doc = Article(**article_data)
         
-        self.assertEqual(article_doc.csl_json, [{'id': '2918f62938de499ba0af74932d0fbee5', 'DOI': '10.1590/2175-8239-JBN-2020-0050', 'URL': 'https://doi.org/10.1590/2175-8239-JBN-2020-0050', 'ISSN': '2179-975X', 'author': [], 'container-title': 'Acta Amazonica', 'container-title-short': 'Acta Amaz.', 'issue': 'Acta Amaz., 2018 123(9999)', 'issued': {'date-parts': [[2018, 9]]}, 'page': '@location', 'publisher': 'Instituto Nacional de Pesquisas da Amazônia', 'title': 'Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome', 'type': 'article-journal', 'volume': '123'}])
+        self.assertEqual(article_doc.csl_json(), [{'id': '2918f62938de499ba0af74932d0fbee5', 'DOI': '10.1590/2175-8239-JBN-2020-0050', 'URL': 'https://doi.org/10.1590/2175-8239-JBN-2020-0050', 'ISSN': '2179-975X', 'author': [], 'container-title': 'Acta Amazonica', 'container-title-short': 'Acta Amaz.', 'issue': 'Acta Amaz., 2018 123(9999)', 'issued': {'date-parts': [[2018, 9]]}, 'page': '@location', 'publisher': 'Instituto Nacional de Pesquisas da Amazônia', 'title': 'Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome', 'type': 'article-journal', 'volume': '123'}])
 
     def test_if_csl_json_property_return_correct_with_empty_authors(self):
         journal_doc = self._create_dummy_journal()
@@ -663,4 +663,174 @@ def test_if_csl_json_property_return_correct_with_empty_authors(self):
         
         article_doc = Article(**article_data)
         
-        self.assertEqual(article_doc.csl_json, [{'id': '2918f62938de499ba0af74932d0fbee5', 'DOI': '10.1590/2175-8239-JBN-2020-0050', 'URL': 'https://doi.org/10.1590/2175-8239-JBN-2020-0050', 'ISSN': '2179-975X', 'author': [{'family': '', 'given': ''}, {'family': '', 'given': ''}], 'container-title': 'Acta Amazonica', 'container-title-short': 'Acta Amaz.', 'issue': 'Acta Amaz., 2018 123(9999)', 'issued': {'date-parts': [[2018, 9]]}, 'page': '@location', 'publisher': 'Instituto Nacional de Pesquisas da Amazônia', 'title': 'Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome', 'type': 'article-journal', 'volume': '123'}])
\ No newline at end of file
+        self.assertEqual(article_doc.csl_json(), [{'id': '2918f62938de499ba0af74932d0fbee5', 'DOI': '10.1590/2175-8239-JBN-2020-0050', 'URL': 'https://doi.org/10.1590/2175-8239-JBN-2020-0050', 'ISSN': '2179-975X', 'author': [{'family': '', 'given': ''}, {'family': '', 'given': ''}], 'container-title': 'Acta Amazonica', 'container-title-short': 'Acta Amaz.', 'issue': 'Acta Amaz., 2018 123(9999)', 'issued': {'date-parts': [[2018, 9]]}, 'page': '@location', 'publisher': 'Instituto Nacional de Pesquisas da Amazônia', 'title': 'Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome', 'type': 'article-journal', 'volume': '123'}])
+
+    def test_if_csl_json_property_return_preferably_elocation_on_page(self):
+        journal_doc = self._create_dummy_journal()
+        issue_doc = self._create_dummy_issue(journal_doc)
+        
+        article_data = {
+            '_id': "2918f62938de499ba0af74932d0fbee5",
+            'aid': "2918f62938de499ba0af74932d0fbee5",
+            'is_public': True,
+            'title': "Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome",
+            'type': "case-report",
+            'doi': "10.1590/2175-8239-JBN-2020-0050",
+            'journal': journal_doc,
+            'issue': issue_doc,
+            'pid': "S0101-02022019000300123",
+            'elocation': "e123",
+            'authors': [
+                "Miola Brígida",
+                "Frota Maria Myrian Melo",
+                "Oliveira André Gadelha de",
+                "Uchôa Kênio Monteles",
+                "Leandro Filho Francisco de Assis"
+            ]
+        }
+        
+        article_doc = Article(**article_data)
+        
+        self.assertEqual(article_doc.csl_json(), [{'id': '2918f62938de499ba0af74932d0fbee5', 'DOI': '10.1590/2175-8239-JBN-2020-0050', 'URL': 'https://doi.org/10.1590/2175-8239-JBN-2020-0050', 'ISSN': '2179-975X', 'author': [{'family': 'Miola Brígida', 'given': 'Miola Brígida'}, {'family': 'Frota Maria Myrian Melo', 'given': 'Frota Maria Myrian Melo'}, {'family': 'Oliveira André Gadelha de', 'given': 'Oliveira André Gadelha de'}, {'family': 'Uchôa Kênio Monteles', 'given': 'Uchôa Kênio Monteles'}, {'family': 'Leandro Filho Francisco de Assis', 'given': 'Leandro Filho Francisco de Assis'}], 'container-title': 'Acta Amazonica', 'container-title-short': 'Acta Amaz.', 'issue': 'Acta Amaz., 2018 123(9999)', 'issued': {'date-parts': [[2018, 9]]}, 'page': 'e123', 'publisher': 'Instituto Nacional de Pesquisas da Amazônia', 'title': 'Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome', 'type': 'article-journal', 'volume': '123'}])
+
+    def test_if_csl_json_property_return_empty_page_with_empty_elocation_fpage_lpage(self):
+        journal_doc = self._create_dummy_journal()
+        issue_doc = self._create_dummy_issue(journal_doc)
+        
+        article_data = {
+            '_id': "2918f62938de499ba0af74932d0fbee5",
+            'aid': "2918f62938de499ba0af74932d0fbee5",
+            'is_public': True,
+            'title': "Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome",
+            'type': "case-report",
+            'doi': "10.1590/2175-8239-JBN-2020-0050",
+            'journal': journal_doc,
+            'issue': issue_doc,
+            'pid': "S0101-02022019000300123",
+            'authors': [
+                "Miola Brígida",
+                "Frota Maria Myrian Melo",
+                "Oliveira André Gadelha de",
+                "Uchôa Kênio Monteles",
+                "Leandro Filho Francisco de Assis"
+            ]
+        }
+        
+        article_doc = Article(**article_data)
+        
+        self.assertEqual(article_doc.csl_json(), [{'id': '2918f62938de499ba0af74932d0fbee5', 'DOI': '10.1590/2175-8239-JBN-2020-0050', 'URL': 'https://doi.org/10.1590/2175-8239-JBN-2020-0050', 'ISSN': '2179-975X', 'author': [{'family': 'Miola Brígida', 'given': 'Miola Brígida'}, {'family': 'Frota Maria Myrian Melo', 'given': 'Frota Maria Myrian Melo'}, {'family': 'Oliveira André Gadelha de', 'given': 'Oliveira André Gadelha de'}, {'family': 'Uchôa Kênio Monteles', 'given': 'Uchôa Kênio Monteles'}, {'family': 'Leandro Filho Francisco de Assis', 'given': 'Leandro Filho Francisco de Assis'}], 'container-title': 'Acta Amazonica', 'container-title-short': 'Acta Amaz.', 'issue': 'Acta Amaz., 2018 123(9999)', 'issued': {'date-parts': [[2018, 9]]}, 'page': '', 'publisher': 'Instituto Nacional de Pesquisas da Amazônia', 'title': 'Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome', 'type': 'article-journal', 'volume': '123'}])
+
+    def test_if_csl_json_property_return_empty_page_with_empty_elocation_lpage(self):
+        journal_doc = self._create_dummy_journal()
+        issue_doc = self._create_dummy_issue(journal_doc)
+        
+        article_data = {
+            '_id': "2918f62938de499ba0af74932d0fbee5",
+            'aid': "2918f62938de499ba0af74932d0fbee5",
+            'is_public': True,
+            'title': "Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome",
+            'type': "case-report",
+            'doi': "10.1590/2175-8239-JBN-2020-0050",
+            'journal': journal_doc,
+            'issue': issue_doc,
+            'fpage': '100',
+            'pid': "S0101-02022019000300123",
+            'authors': [
+                "Miola Brígida",
+                "Frota Maria Myrian Melo",
+                "Oliveira André Gadelha de",
+                "Uchôa Kênio Monteles",
+                "Leandro Filho Francisco de Assis"
+            ]
+        }
+        
+        article_doc = Article(**article_data)
+        
+        self.assertEqual(article_doc.csl_json(), [{'id': '2918f62938de499ba0af74932d0fbee5', 'DOI': '10.1590/2175-8239-JBN-2020-0050', 'URL': 'https://doi.org/10.1590/2175-8239-JBN-2020-0050', 'ISSN': '2179-975X', 'author': [{'family': 'Miola Brígida', 'given': 'Miola Brígida'}, {'family': 'Frota Maria Myrian Melo', 'given': 'Frota Maria Myrian Melo'}, {'family': 'Oliveira André Gadelha de', 'given': 'Oliveira André Gadelha de'}, {'family': 'Uchôa Kênio Monteles', 'given': 'Uchôa Kênio Monteles'}, {'family': 'Leandro Filho Francisco de Assis', 'given': 'Leandro Filho Francisco de Assis'}], 'container-title': 'Acta Amazonica', 'container-title-short': 'Acta Amaz.', 'issue': 'Acta Amaz., 2018 123(9999)', 'issued': {'date-parts': [[2018, 9]]}, 'page': '100', 'publisher': 'Instituto Nacional de Pesquisas da Amazônia', 'title': 'Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome', 'type': 'article-journal', 'volume': '123'}])
+
+    def test_if_csl_json_property_return_empty_page_with_empty_elocation_fpage(self):
+        journal_doc = self._create_dummy_journal()
+        issue_doc = self._create_dummy_issue(journal_doc)
+        
+        article_data = {
+            '_id': "2918f62938de499ba0af74932d0fbee5",
+            'aid': "2918f62938de499ba0af74932d0fbee5",
+            'is_public': True,
+            'title': "Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome",
+            'type': "case-report",
+            'doi': "10.1590/2175-8239-JBN-2020-0050",
+            'journal': journal_doc,
+            'issue': issue_doc,
+            'lpage': '200',
+            'pid': "S0101-02022019000300123",
+            'authors': [
+                "Miola Brígida",
+                "Frota Maria Myrian Melo",
+                "Oliveira André Gadelha de",
+                "Uchôa Kênio Monteles",
+                "Leandro Filho Francisco de Assis"
+            ]
+        }
+        
+        article_doc = Article(**article_data)
+        
+        self.assertEqual(article_doc.csl_json(), [{'id': '2918f62938de499ba0af74932d0fbee5', 'DOI': '10.1590/2175-8239-JBN-2020-0050', 'URL': 'https://doi.org/10.1590/2175-8239-JBN-2020-0050', 'ISSN': '2179-975X', 'author': [{'family': 'Miola Brígida', 'given': 'Miola Brígida'}, {'family': 'Frota Maria Myrian Melo', 'given': 'Frota Maria Myrian Melo'}, {'family': 'Oliveira André Gadelha de', 'given': 'Oliveira André Gadelha de'}, {'family': 'Uchôa Kênio Monteles', 'given': 'Uchôa Kênio Monteles'}, {'family': 'Leandro Filho Francisco de Assis', 'given': 'Leandro Filho Francisco de Assis'}], 'container-title': 'Acta Amazonica', 'container-title-short': 'Acta Amaz.', 'issue': 'Acta Amaz., 2018 123(9999)', 'issued': {'date-parts': [[2018, 9]]}, 'page': '200', 'publisher': 'Instituto Nacional de Pesquisas da Amazônia', 'title': 'Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome', 'type': 'article-journal', 'volume': '123'}])
+
+    def test_if_csl_json_property_return_empty_page_with_empty_elocation(self):
+        journal_doc = self._create_dummy_journal()
+        issue_doc = self._create_dummy_issue(journal_doc)
+        
+        article_data = {
+            '_id': "2918f62938de499ba0af74932d0fbee5",
+            'aid': "2918f62938de499ba0af74932d0fbee5",
+            'is_public': True,
+            'title': "Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome",
+            'type': "case-report",
+            'doi': "10.1590/2175-8239-JBN-2020-0050",
+            'journal': journal_doc,
+            'issue': issue_doc,
+            'fpage': '100',
+            'lpage': '200',
+            'pid': "S0101-02022019000300123",
+            'authors': [
+                "Miola Brígida",
+                "Frota Maria Myrian Melo",
+                "Oliveira André Gadelha de",
+                "Uchôa Kênio Monteles",
+                "Leandro Filho Francisco de Assis"
+            ]
+        }
+        
+        article_doc = Article(**article_data)
+        
+        self.assertEqual(article_doc.csl_json(), [{'id': '2918f62938de499ba0af74932d0fbee5', 'DOI': '10.1590/2175-8239-JBN-2020-0050', 'URL': 'https://doi.org/10.1590/2175-8239-JBN-2020-0050', 'ISSN': '2179-975X', 'author': [{'family': 'Miola Brígida', 'given': 'Miola Brígida'}, {'family': 'Frota Maria Myrian Melo', 'given': 'Frota Maria Myrian Melo'}, {'family': 'Oliveira André Gadelha de', 'given': 'Oliveira André Gadelha de'}, {'family': 'Uchôa Kênio Monteles', 'given': 'Uchôa Kênio Monteles'}, {'family': 'Leandro Filho Francisco de Assis', 'given': 'Leandro Filho Francisco de Assis'}], 'container-title': 'Acta Amazonica', 'container-title-short': 'Acta Amaz.', 'issue': 'Acta Amaz., 2018 123(9999)', 'issued': {'date-parts': [[2018, 9]]}, 'page': '100-200', 'publisher': 'Instituto Nacional de Pesquisas da Amazônia', 'title': 'Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome', 'type': 'article-journal', 'volume': '123'}])
+
+    def test_if_csl_json_property_return_empty_page_with_elocation_fpage_lpage(self):
+        journal_doc = self._create_dummy_journal()
+        issue_doc = self._create_dummy_issue(journal_doc)
+        
+        article_data = {
+            '_id': "2918f62938de499ba0af74932d0fbee5",
+            'aid': "2918f62938de499ba0af74932d0fbee5",
+            'is_public': True,
+            'title': "Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome",
+            'type': "case-report",
+            'doi': "10.1590/2175-8239-JBN-2020-0050",
+            'journal': journal_doc,
+            'issue': issue_doc,
+            'elocation': 'e987',
+            'fpage': '100',
+            'lpage': '200',
+            'pid': "S0101-02022019000300123",
+            'authors': [
+                "Miola Brígida",
+                "Frota Maria Myrian Melo",
+                "Oliveira André Gadelha de",
+                "Uchôa Kênio Monteles",
+                "Leandro Filho Francisco de Assis"
+            ]
+        }
+        
+        article_doc = Article(**article_data)
+        
+        self.assertEqual(article_doc.csl_json(), [{'id': '2918f62938de499ba0af74932d0fbee5', 'DOI': '10.1590/2175-8239-JBN-2020-0050', 'URL': 'https://doi.org/10.1590/2175-8239-JBN-2020-0050', 'ISSN': '2179-975X', 'author': [{'family': 'Miola Brígida', 'given': 'Miola Brígida'}, {'family': 'Frota Maria Myrian Melo', 'given': 'Frota Maria Myrian Melo'}, {'family': 'Oliveira André Gadelha de', 'given': 'Oliveira André Gadelha de'}, {'family': 'Uchôa Kênio Monteles', 'given': 'Uchôa Kênio Monteles'}, {'family': 'Leandro Filho Francisco de Assis', 'given': 'Leandro Filho Francisco de Assis'}], 'container-title': 'Acta Amazonica', 'container-title-short': 'Acta Amaz.', 'issue': 'Acta Amaz., 2018 123(9999)', 'issued': {'date-parts': [[2018, 9]]}, 'page': 'e987', 'publisher': 'Instituto Nacional de Pesquisas da Amazônia', 'title': 'Nephrotic syndrome associated with primary atypical hemolytic uremic syndrome', 'type': 'article-journal', 'volume': '123'}])
\ No newline at end of file