@Article{zbMATH03225526,
Author = {A. F. {Filippov}},
Title = {{On certain questions in the theory of optimal control}},
FJournal = {{Journal of the Society for Industrial \& Applied Mathematics. Series A. Control}},
Journal = {{J. Soc. Ind. Appl. Math., Ser. A, Control}},
ISSN = {0887-4603},
Volume = {1},
Pages = {76--84},
Year = {1962},
Publisher = {Society for Industrial \& Applied Mathematics, Philadelphia},
Language = {English},
Zbl = {0139.05102}
}