%0 Journal Article %A Mikhail I. Sumin %T Regularization of Pontryagin maximum principle in optimal control of distributed systems %J Ural mathematical journal %D 2016 %P 72-86 %V 2 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/UMJ_2016_2_2_a6/ %G en %F UMJ_2016_2_2_a6