TY  - JOUR
AU  - R. L. Frum-Ketkov
TI  - The behaviour of cycles in the continuous mapping of compacts
JO  - Doklady Akademii Nauk
PY  - 1957
SP  - 249
EP  - 252
VL  - 115
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1957_115_2_a13/
LA  - ru
ID  - DAN_1957_115_2_a13
ER  -