@article{DAN_1960_135_5_a18,
     author = {V. S. Vladimirov},
     title = {Boundary conditions in the method of spherical harmonics},
     journal = {Doklady Akademii Nauk},
     pages = {1091--1094},
     year = {1960},
     volume = {135},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_135_5_a18/}
}