\bib{1996/helleseth}
\yr 1996
\mr 98g:94028
\by Tor Helleseth
\by Thomas Johansson
\paper Universal hash functions from exponential sums over finite fields and Galois rings
\inbook \cite{1996/koblitz}
\pages 31--44
\url http://link.springer.de/link/service/series/0558/bibs/1109/11090031.htm
\endref