@article{DAN_1974_216_5_a17,
     author = {I. L. Verbitskii},
     title = {Two-dimensional problem of diffraction on periodic structures},
     journal = {Doklady Akademii Nauk},
     pages = {1022--1025},
     publisher = {mathdoc},
     volume = {216},
     number = {5},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_216_5_a17/}
}