@article{DAN_1996_349_5_a5,
     author = {V. F. Lubyshev},
     title = {Approximation and regularization of optimal control problems for},
     journal = {Doklady Akademii Nauk},
     pages = {598--602},
     year = {1996},
     volume = {349},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1996_349_5_a5/}
}