TY  - BOOK
AU  - Lyndon,Roger C
AU  - Schupp,Paul E.
TI  - Combinatorial group theory
SN  - 0387076425
PY  - 1977///
CY  - Berlin
PB  - Springer-Verlag
KW  - Combinatorial group theory
N1  - Bibliography : p. 295-332
ER  -