TY  - JOUR
AU  - O. V. Kulikova
TI  - On relatively aspherical presentations and their central extensions
JO  - Fundamentalʹnaâ i prikladnaâ matematika
PY  - 2005
SP  - 115
EP  - 125
VL  - 11
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FPM_2005_11_2_a7/
LA  - ru
ID  - FPM_2005_11_2_a7
ER  -