Products of Conjugacy Classes in a Free Group: a Counterexample. S.M. Gersten — 1986 Mathematische Zeitschrift
Intersections of Finitely Generated Subgroups of Free Groups and Resolutions de Graphs. S.M. Gersten — 1983 Inventiones mathematicae
Quadratic Divergence of Geodesics in CAT (0) Spaces. S.M. Gersten — 1994 Geometric and functional analysis
Preservation and Distortion of Area in Finitely Presented Groups. S.M. Gersten — 1996 Geometric and functional analysis
Small cancellation theory and automatic groups. S.M. Gersten; H.B. Short — 1990 Inventiones mathematicae
Small cancellation theory and automatic groups: Part II. S.M. Gersten; H. Short — 1991 Inventiones mathematicae