KazankoО. V., and PenkinaО. E. “Norm of Iegnfunction of One-Dimension Photonic Crystal”. Visnyk of V.N. Karazin Kharkiv National University, Series “Radio Physics and Electronics”, no. 35, Dec. 2021, pp. 86-93, doi:10.26565/2311-0872-2021-35-08.