@article{DAN_1976_227_4_a10,
     author = {V. Ya. Yaroslavtseva},
     title = {A class of transformation operators and their applications to differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {816--819},
     publisher = {mathdoc},
     volume = {227},
     number = {4},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_227_4_a10/}
}