@article{DE_1975_11_6_a9,
     author = {V. A. Krasnov and A. S. Fokht},
     title = {Integral estimates of the fractional derivatives of the solutions of linear equations of elliptic type in the $L_2$ {metric.~I}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1042--1053},
     publisher = {mathdoc},
     volume = {11},
     number = {6},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_6_a9/}
}