@article{DAN_1957_116_6_a2,
     author = {Yu. V. Glebskii},
     title = {On the characteristic properties of the solutions of regular and quasiregular problems in the calculus of variations},
     journal = {Doklady Akademii Nauk},
     pages = {910--912},
     publisher = {mathdoc},
     volume = {116},
     number = {6},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_116_6_a2/}
}