@article{CMFD_2003_3_a5,
     author = {G. Schmidt},
     title = {Electromagnetic {Scattering} by {Periodic} {Structures}},
     journal = {Contemporary Mathematics. Fundamental Directions},
     pages = {113--128},
     year = {2003},
     volume = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMFD_2003_3_a5/}
}