%0 Journal Article %A Yu. V. Shestopalov %T On the justification of the spectral method for calculating natural waves of microstrip lines %J Differencialʹnye uravneniâ %D 1980 %P 1504-1512 %V 16 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1980_16_8_a16/ %G ru %F DE_1980_16_8_a16