TY  - JOUR
AU  - S. A. Popov
TI  - Almost smooth two-dimensional submanyfolds of four-dimensional manyfolds and some link invariants
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1973
SP  - 146
EP  - 154
VL  - 36
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1973_36_a6/
LA  - ru
ID  - ZNSL_1973_36_a6
ER  -