TY  - JOUR
AU  - P. A. Krylov
TI  - On two problems concerning extension groups of Abelian groups
JO  - Sbornik. Mathematics
PY  - 1995
SP  - 59
EP  - 76
VL  - 81
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1995_81_1_a3/
LA  - en
ID  - SM_1995_81_1_a3
ER  -