@article{DE_1967_3_8_a17,
     author = {T. V. Lossievskaya},
     title = {Estimates in a closed region of the eigenfunctions of an elliptic operator with discontinuous coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1375--1392},
     publisher = {mathdoc},
     volume = {3},
     number = {8},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1967_3_8_a17/}
}