Kudrynskyi, Z. R., and Z. D. Kovalyuk. “Heterojunctions Formed by Annealing of GaSe and InSe Layered Crystals in Zinc Vapor”. Technology and Design in Electronic Equipment, no. 6, Dec. 2012, pp. 40-43, http://www.tkea.com.ua/index.php/journal/article/view/TKEA.2012.6.40.