[MathCongrès]
Combinatorial and geometric group theory
/ Ed. Duncan, Andrew J. ; Ed. Gilbert, N. D. ; Ed. Howie, James ; Heriot-Watt University.
-Cambridge : Cambridge university Press, 1995. - ix, 325 p. ; 23 cm
[MathOuvrage]
Knots and surfaces
/ Gilbert, N. D. ; Porter, T..
-New York, Oxford, Tokyo : Oxford university Press, 1994. - xi, 268 p. ; 24 cm