@article{DE_2002_38_8_a10,
     author = {A. A. Polosin},
     title = {On the {Location} of the {Spectrum} of a {Mixed} {Boundary} {Value} {Problem} in a {Square}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1095--1100},
     publisher = {mathdoc},
     volume = {38},
     number = {8},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2002_38_8_a10/}
}