Hyperbolic volume and mod p homology. Peter B. Shalen; Marc Culler — 1993 Commentarii mathematici Helvetici
Linear Groups of Finite Cohomological Dimension. Peter B. Shalen; Roger C. Alperin — 1982 Inventiones mathematicae
Volumes of hyperbolic Haken manifolds, I. Peter B. Shalen; Marc Culler — 1994 Inventiones mathematicae
Amalgamated products and finitely presented groups. Gilbert Baumslag; Peter B. Shalen — 1990 Commentarii mathematici Helvetici