@article{VMUMM_1991_2_a7,
     author = {V. M. Fedorov},
     title = {Approximation of functions on a {sphere.~II}},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {30--38},
     publisher = {mathdoc},
     number = {2},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1991_2_a7/}
}