@article{DE_1978_14_10_a21,
     author = {M. M. Shahin},
     title = {A boundary value problem in a class of discontinuous functions and the calculus of variations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1905--1906},
     publisher = {mathdoc},
     volume = {14},
     number = {10},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_10_a21/}
}