@article{ZVMMF_1989_29_1_a6,
     author = {A. A. Bykov and M. K. Trubetskov},
     title = {Optimization of the form of a periodic interface between two homogeneous media with different dielectric permeabilities},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {75--81},
     publisher = {mathdoc},
     volume = {29},
     number = {1},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1989_29_1_a6/}
}