One more reference

kirj.tex

@@ -20,6 +20,12 @@
   \emph{Programming Pearls}.
   Addison-Wesley, 1986.
 
+\bibitem{ber93}
+  O. Berkman and U. Vishkin.
+  Recursive star-tree parallel data structure.
+  \emph{SIAM Journal on Computing},
+  22(2):221--242, 1993.
+
 \bibitem{cod15}
   Codeforces: On ''Mo's algorithm'',
   \url{http://codeforces.com/blog/entry/20032}