@article{IVM_1991_11_a15,
     author = {V. A. Dykhta},
     title = {A~variational maximum principle for pulse and singular regimes in an optimization problem that is linear with respect to control},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {89--91},
     publisher = {mathdoc},
     number = {11},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1991_11_a15/}
}