\bib{1991/stewart}
\yr 1991
\mr 92k:11037
\by C. L. Stewart
\by Kunrui Yu
\paper On the $abc$ conjecture
\jour Mathematische Annalen
\issn 0025--5831
\vol 291
\pages 225--230
\url http://cr.yp.to/\allowbreak bib/\allowbreak entries.html#\allowbreak 1991/\allowbreak stewart
\endref