diff --git a/paper/paper.bib b/paper/paper.bib
index 5918ce6..694080b 100644
--- a/paper/paper.bib
+++ b/paper/paper.bib
@@ -138,3 +138,35 @@ @article{ondov2016mash
   year={2016},
   publisher={Springer}
 }
+
+@article{nasko2018refseq,
+  title={RefSeq database growth influences the accuracy of k-mer-based lowest common ancestor species identification},
+  author={Nasko, Daniel J and Koren, Sergey and Phillippy, Adam M and Treangen, Todd J},
+  journal={Genome biology},
+  volume={19},
+  pages={1--10},
+  year={2018},
+  publisher={Springer}
+}
+
+@article{o2016reference,
+  title={Reference sequence (RefSeq) database at NCBI: current status, taxonomic expansion, and functional annotation},
+  author={O'Leary, Nuala A and Wright, Mathew W and Brister, J Rodney and Ciufo, Stacy and Haddad, Diana and McVeigh, Rich and Rajput, Bhanu and Robbertse, Barbara and Smith-White, Brian and Ako-Adjei, Danso and others},
+  journal={Nucleic acids research},
+  volume={44},
+  number={D1},
+  pages={D733--D745},
+  year={2016},
+  publisher={Oxford University Press}
+}
+
+@article{parks2022gtdb,
+  title={GTDB: an ongoing census of bacterial and archaeal diversity through a phylogenetically consistent, rank normalized and complete genome-based taxonomy},
+  author={Parks, Donovan H and Chuvochina, Maria and Rinke, Christian and Mussig, Aaron J and Chaumeil, Pierre-Alain and Hugenholtz, Philip},
+  journal={Nucleic acids research},
+  volume={50},
+  number={D1},
+  pages={D785--D794},
+  year={2022},
+  publisher={Oxford University Press}
+}