@article{IVM_1973_8_a7,
     author = {S. F. Morozov and V. I. Sumin},
     title = {Multidimensional variational problems in a~class of discontinuous functions},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {54--67},
     publisher = {mathdoc},
     number = {8},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1973_8_a7/}
}