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Combinatorial Group Theory.

P. M. Cohn, Wilhelm Magnus, A. Karrass et al. · American Mathematical Monthly · 1967 · 1.3K citations

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David E. Muller, Paul E. Schupp · Journal of Computer and System Sciences · 1983 · 257 citations

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Notes on word hyperbolic groups

J.M Alonso, Thomas J. Brady, D. Cooper et al. · Optics Letters · 1991 · 182 citations

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GROUPS ACTING ON GRAPHS (Cambridge Studies in Advanced Mathematics 17)

P. M. Cohn · Bulletin of the London Mathematical Society · 1990 · 35 citations

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