Galaydych, Viktor K., Alexandr E. Sporov, Volodymyr P. Olefir, and Mykola O. Azarenkov. 2021. “Fast Electromagnetic Waves on Metamaterial’s Boundary: Modeling of Gain”. East European Journal of Physics, no. 3 (September), 145-50. https://doi.org/10.26565/2312-4334-2021-3-22.