@article{DE_1998_34_9_a11,
     author = {Yu. V. Gandel' and I. K. Lifanov},
     title = {A new approach to the solution of mixed boundary value problems for the {Laplace} and {Helmholtz} equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1246--1253},
     publisher = {mathdoc},
     volume = {34},
     number = {9},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_9_a11/}
}