@article{DAN_1980_251_6_a2,
     author = {V. V. Katrakhov},
     title = {General boundary-value problems for a class of singular and degenerate equations},
     journal = {Doklady Akademii Nauk},
     pages = {1296--1300},
     publisher = {mathdoc},
     volume = {251},
     number = {6},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_251_6_a2/}
}