TY  - JOUR
AU  - A. A. Tolstonogov
TI  - Relaxation in non-convex optimal control problems described by first-order evolution equations
JO  - Sbornik. Mathematics
PY  - 1999
SP  - 1689
EP  - 1714
VL  - 190
IS  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1999_190_11_a4/
LA  - en
ID  - SM_1999_190_11_a4
ER  -