@article{ZVMMF_1986_26_2_a7,
     author = {A. S. Barashkov and G. I. Barashkova},
     title = {Determination of the coefficient of {Helmholtz's} equation from the boundary values of the solution},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {242--253},
     publisher = {mathdoc},
     volume = {26},
     number = {2},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1986_26_2_a7/}
}