@article{IVM_1975_11_a4,
     author = {A. A. Kelzon},
     title = {Interpolation on the sphere},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {41--46},
     year = {1975},
     number = {11},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1975_11_a4/}
}