Мисюра, І., С. Кононенко, В. Журенко, О. Калантар’ян, and Р. Скиба. “The Influence of Long Time X-Ray Irradiation on Structure and Electronic Transitions of Poleskiy Amber and Silica”. Journal of Surface Physics and Engineering, Vol. 3, no. 2, Aug. 2019, pp. 78-83, https://periodicals.karazin.ua/pse/article/view/13670.