\bib{1990/bach-cba}
\yr 1990
\by Eric Bach
\by James Driscoll
\by Jeffrey Shallit
\paper Factor refinement
\inbook \cite{1990/johnson-soda}
\pages 201--211
\seenewer \cite{1993/bach-cba}
\url http://cr.yp.to/\allowbreak bib/\allowbreak entries.html#\allowbreak 1990/\allowbreak bach-cba
\endref