@article{TMF_2013_174_3_a3,
     author = {S. A. Nazarov},
     title = {Spectral properties of a~thin layer with a~doubly periodic family of thinning regions},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {398--415},
     year = {2013},
     volume = {174},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2013_174_3_a3/}
}