%0 Journal Article %A A. P. Djotyan %A A. A. Avetisyan %T Excitonic absorption in gapped graphene systems %J Proceedings of the Yerevan State University. Physical and mathematical sciences %D 2017 %P 93-96 %V 51 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZERU_2017_51_1_a16/ %G en %F UZERU_2017_51_1_a16