00505naa#a2200169#i#450# EN\\bibl\5305 20250206031648.4 1992-5980 20150331b2015####ek#y0engy0150####ca RUS RU Angular selective light transmission characteristics of a grating optical filter Journal article rostov on don Don state technical University 2015 7 с. Journal article local Zakirullin Rustam zh-szf.ru