TY  - JOUR
AU  - D. Z. Kagan
TI  - Nontrivial pseudocharacters on groups with one defining relation and nontrivial centre
JO  - Sbornik. Mathematics
PY  - 2017
SP  - 75
EP  - 89
VL  - 208
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_2017_208_1_a3/
LA  - en
ID  - SM_2017_208_1_a3
ER  -