G. Vasile, R. Savastru, A. Popescu, M. Stafe, D. Savastru, S. Dontu, L. Baschir, V. Sava, B. Chiricuta, M. Mihailescu, C. Negutu, N. Puscas, Modelling the 2D plasmonic structures with active chalcogenide glass layers, ROM REP PHYS, vol. 65, no. 3, pp. 1012-1018, 1221-1451, 2013