@article{ZVMMF_1996_36_8_a12,
     author = {P. A. Krutitskiǐ},
     title = {The mixed problem for the {Helmholtz} equation in a multiply connected region},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {127--137},
     publisher = {mathdoc},
     volume = {36},
     number = {8},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1996_36_8_a12/}
}