@article{DAN_1972_202_6_a1,
     author = {P. T. Dybov},
     title = {The solvability of the first boundary value problem for a sixth order differential equation of elliptic type},
     journal = {Doklady Akademii Nauk},
     pages = {1251--1253},
     publisher = {mathdoc},
     volume = {202},
     number = {6},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_202_6_a1/}
}