@article{ZVMMF_1988_28_12_a1,
     author = {A. A. Konstantinov and V. P. Maslov and A. M. Chebotarev},
     title = {Shift of the boundary conditions for partial differential equations},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1763--1778},
     year = {1988},
     volume = {28},
     number = {12},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1988_28_12_a1/}
}