TY  - JOUR
AU  - Fenn, Roger
AU  - Sjerve, Denis
TI  - Massey Products and Lower Central Series of Free Groups
JO  - Canadian journal of mathematics
PY  - 1987
SP  - 322
EP  - 337
VL  - 39
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1987-015-5/
DO  - 10.4153/CJM-1987-015-5
ID  - 10_4153_CJM_1987_015_5
ER  -