Djotyan, A.P., and A.A. Avetisyan. “EXCITONIC ABSORPTION IN GAPPED GRAPHENE SYSTEMS”. Proceedings of the YSU A: Physical and Mathematical Sciences 51, no. 1 (242) (March 20, 2017): 93–96. Accessed July 22, 2024. https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol51_no1_2017_pp093-096.