%0 Journal Article %A A. A. Bykov %A V. Yu. Popov %A A. G. Sveshnikov %T The use of the singular perturbations method to calculate the electromagnetic-wave-scattering operator in open periodic waveguide structures %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1994 %P 1038-1052 %V 34 %N 7 %U http://geodesic.mathdoc.fr/item/ZVMMF_1994_34_7_a6/ %G ru %F ZVMMF_1994_34_7_a6