TY  - JOUR
AU  - V. I. Plotnikov
TI  - Existence theorems on optimizing functions for optimal systems with distributed parameters
JO  - Izvestiya. Mathematics 
PY  - 1970
SP  - 697
EP  - 719
VL  - 4
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1970_4_3_a11/
LA  - en
ID  - IM2_1970_4_3_a11
ER  -