@article{MZM_1982_32_4_a7,
     author = {L. P. Kuptsov},
     title = {Expansion of certain parabolic means},
     journal = {Matemati\v{c}eskie zametki},
     pages = {499--510},
     publisher = {mathdoc},
     volume = {32},
     number = {4},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1982_32_4_a7/}
}