diff --git a/list.tex b/list.tex
index 9952315..601b445 100644
--- a/list.tex
+++ b/list.tex
@@ -155,6 +155,11 @@
   Gaussian elimination is not optimal.
   \emph{Numerische Mathematik}, 13(4):354--356, 1969.
 
+\bibitem{tar84}
+  R. E. Tarjan and U. Vishkin.
+  Finding biconnected componemts and computing tree functions in logarithmic parallel time.
+  \emph{25th Annual Symposium on Foundations of Computer Science}, 12--20, 1984.
+
 \bibitem{tem61}
   H. N. V. Temperley and M. E. Fisher.
   Dimer problem in statistical mechanics -- an exact result.