diff --git a/index.html b/index.html
index 4f56570..7ede419 100644
--- a/index.html
+++ b/index.html
@@ -121,6 +121,7 @@ <h4 class="text-center">
 
         <div class="row mt-4">
             <div class=" mx-auto">
+<!-- 		slide: https://1drv.ms/p/s!AnCI5LsBwFEFgu4jaTZkKLz782k02Q?e=k3SuwK -->
                 <div style="text-align: center;">
                     <a class="btn btn-dark" href="https://arxiv.org/pdf/2312.02158.pdf" target="_blank">
                         <!-- <img src="imgs/paper_icon.png" height="80px"> -->