@article{IVM_2008_1_a6,
     author = {M. I. Sumin and E. V. Trushina},
     title = {On the regularizing properties of the {Pontryagin} maximum principle},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {63--77},
     publisher = {mathdoc},
     number = {1},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2008_1_a6/}
}