TY  - JOUR
AU  - P. I. Balk
TI  - The use of a priori information on the topological features of
JO  - Doklady Akademii Nauk
PY  - 1989
SP  - 1082
EP  - 1084
VL  - 309
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1989_309_5_a12/
LA  - ru
ID  - DAN_1989_309_5_a12
ER  -