@article{IIGUM_2017_19_a2,
     author = {V. I. Gurman},
     title = {On certain problems in optimal control theory},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {26--43},
     year = {2017},
     volume = {19},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2017_19_a2/}
}