TY  - JOUR
AU  - V. I. Sumin
TI  - Strong degeneration of singular controls in distributed problems
JO  - Doklady Akademii Nauk
PY  - 1991
SP  - 295
EP  - 299
VL  - 320
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1991_320_2_a7/
LA  - ru
ID  - DAN_1991_320_2_a7
ER  -