@article{DAN_1993_333_6_a6,
     author = {S. I. Fedorov},
     title = {On the solvability of boundary value problems for a model of the},
     journal = {Doklady Akademii Nauk},
     pages = {711--713},
     publisher = {mathdoc},
     volume = {333},
     number = {6},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1993_333_6_a6/}
}