TY  - JOUR
AU  - P. V. Yagodovskii
TI  - Linear deformations of discrete groups and constructions of multivalued groups
JO  - Izvestiya. Mathematics 
PY  - 2000
SP  - 1065
EP  - 1089
VL  - 64
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_2000_64_5_a7/
LA  - en
ID  - IM2_2000_64_5_a7
ER  -