TY  - JOUR
AU  - G. P. Egorychev
AU  - Yu. D. Ushakov
TI  - The ranks of the $p$-central series of free groups of certain manifolds
JO  - Matematičeskie zametki
PY  - 1977
SP  - 575
EP  - 582
VL  - 22
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1977_22_4_a13/
LA  - ru
ID  - MZM_1977_22_4_a13
ER  -