Geodesic
On some control problem
Acta Universitatis Lodziensis. Folia Mathematica, Volume 01 (1984) 
Walczak, Stanislaw. On some control problem. Acta Universitatis Lodziensis. Folia Mathematica, Volume 01 (1984). http://geodesic.mathdoc.fr/item/AULFM_1984_01_a3/
@article{AULFM_1984_01_a3,
     author = {Walczak, Stanislaw},
     title = {On some control problem},
     journal = {Acta Universitatis Lodziensis. Folia Mathematica},
     year = {1984},
     volume = {01},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AULFM_1984_01_a3/}
}
TY  - JOUR
AU  - Walczak, Stanislaw
TI  - On some control problem
JO  - Acta Universitatis Lodziensis. Folia Mathematica
PY  - 1984
VL  - 01
UR  - http://geodesic.mathdoc.fr/item/AULFM_1984_01_a3/
LA  - en
ID  - AULFM_1984_01_a3
ER  - 
%0 Journal Article
%A Walczak, Stanislaw
%T On some control problem
%J Acta Universitatis Lodziensis. Folia Mathematica
%D 1984
%V 01
%U http://geodesic.mathdoc.fr/item/AULFM_1984_01_a3/
%G en
%F AULFM_1984_01_a3

See the original article notice from the University of Lodz Repository source

In the paper there has been considered an optimal control problem in a arbitrary convex class of controls. The integral maximum principle for optimal controls as well as a local necessary condition for monotone controls have been proved.