@article{DAN_1991_316_6_a9,
     author = {M. A. Sychev},
     title = {Regularity of solutions of some variational problems},
     journal = {Doklady Akademii Nauk},
     pages = {1326--1330},
     publisher = {mathdoc},
     volume = {316},
     number = {6},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_316_6_a9/}
}