TY  - JOUR
AU  - Leonard Berkovitz
TI  - Existence theorems in problems of optimal control
JO  - Studia Mathematica
PY  - 1972
SP  - 275
EP  - 285
VL  - 44
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/sm-44-3-275-285/
DO  - 10.4064/sm-44-3-275-285
LA  - en
ID  - 10_4064_sm_44_3_275_285
ER  -