diff --git a/list.tex b/list.tex
index 600f3d0..9952315 100644
--- a/list.tex
+++ b/list.tex
@@ -138,7 +138,7 @@
 \bibitem{pac13}
   J. Pachocki and J. Radoszweski.
   Where to use and how not to use polynomial string hashing.
-  \emph{Olympiads in Informatics}, 2013.
+  \emph{Olympiads in Informatics}, 7(1):90--100, 2013.
 
 \bibitem{pri57}
   R. C. Prim.