%0 Journal Article %A E. V. Gusarova %A V. Yu. Martynova %A M. Yu. Medvedik %T Calculation of diffraction efficiency in the problem of designing multilevel diffraction gratings %J Numerical methods and programming %D 2024 %P 336-346 %V 25 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMP_2024_25_3_a6/ %G ru %F VMP_2024_25_3_a6