diff --git a/boat.py b/boat.py
index 4774144..63377b3 100644
--- a/boat.py
+++ b/boat.py
@@ -14,7 +14,7 @@
 #               If you use any part of this code, in addition to                       #
 #               original LED, CPS, and CBS studies, please cite:                       #
 #                                                                                      #
-#    1) https://github.com/ahmetaltunfatih/LEDAW (DOI: 10.13140/RG.2.2.35160.30729)    #
+#                     1) https://github.com/ahmetaltunfatih/LEDAW                      #
 #   2) https://chemrxiv.org/engage/chemrxiv/article-details/6698104e01103d79c547414c   # 
 #                                                                                      #
 ########################################################################################