TY  - JOUR
AU  - V. A. Smirnov
TI  - Secondary cohomology operations
JO  - Doklady Akademii Nauk
PY  - 1986
SP  - 301
EP  - 304
VL  - 288
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1986_288_2_a9/
LA  - ru
ID  - DAN_1986_288_2_a9
ER  -