\bib{1972/williams}
\yr 1972
\mr 51:320
\by Hugh C. Williams
\paper Some algorithms for solving $x^q\equiv N\pmod p$
\inbook \cite{1972/hoffman}
\pages 451--462
\url http://cr.yp.to/\allowbreak bib/\allowbreak entries.html#\allowbreak 1972/\allowbreak williams
\endref