@article{DE_1973_9_9_a10,
     author = {V. F. Butuzov},
     title = {Asymptotic behavior of the solution of the equation $\mu^2\Delta u-k^2(x,y)u=f(x,y)$ in a rectangular domain},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1654--1660},
     publisher = {mathdoc},
     volume = {9},
     number = {9},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1973_9_9_a10/}
}