Roger C. Lyndon
Daniel E. Cohen
Gilbert Baumslag
London Mathematical Society Symposium on Computational Group Theory (1982 Durham)
Derek F. Holt
Andrew J. Duncan
John C. Stillwell
W. Metzler
Oleg Vladimirovič Bogopolʹskij
AMS Special Session in Combinatorial Group Theory--Infinite Groups (1988 University of Maryland, College Park)
Robert Gilman
Wilhelm Magnus
Max Dehn
Daniel E Cohen
AMS Special Session Geometric Group Theory (2001 Las Vegas, Nev.)
E. Ghys
Chandler, Bruce