@article{IVM_1967_12_a4,
     author = {V. N. Koshelev and S. F. Morozov},
     title = {Sufficient conditions for the existence of discontinuous solutions for the simplest integral in the calculus of {variations.~II}},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {38--46},
     publisher = {mathdoc},
     number = {12},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1967_12_a4/}
}