@article{DE_1992_28_1_a11,
     author = {A. S. Makin},
     title = {Sharp estimates, with respect to order, for root functions of a second-order elliptic operator},
     journal = {Differencialʹnye uravneni\^a},
     pages = {97--110},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1992_28_1_a11/}
}