\bib{1991/thomborson}
\yr 1991
\by Clark D. Thomborson
\book V.42bis and other Ziv-Lempel variants
\bookinfo Computer Science Technical Report 91--02
\publ University of Minnesota
\publaddr Duluth
\seenewer \cite{1992/thomborson}
\url http://cr.yp.to/\allowbreak bib/\allowbreak entries.html#\allowbreak 1991/\allowbreak thomborson
\endref