@article{DE_1972_8_10_a12,
     author = {N. Mahmetzhanov},
     title = {Expansion of functions belonging to $L_p$ in the eigenfunctions of certain elliptic operators},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1825--1834},
     publisher = {mathdoc},
     volume = {8},
     number = {10},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1972_8_10_a12/}
}