@article{DE_1969_5_1_a11,
     author = {A. S. Fokht},
     title = {Estimates of the derivatives of the associated {Legendre} functions in the $L_2$ metric},
     journal = {Differencialʹnye uravneni\^a},
     pages = {154--158},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_1_a11/}
}