@article{ZVMMF_1991_31_11_a6,
     author = {A. S. Il'inskii and O. M. Maslovskaya},
     title = {The finite element method in the problem of diffraction by a periodic structure},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1684--1691},
     year = {1991},
     volume = {31},
     number = {11},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1991_31_11_a6/}
}