Kudyshev, Z. A., A. E. Davletov, I. R. Gabitov, A. Kisan, and Y. S. Mukhametkarimov. “FDTD Modeling of the Second Harmonic Generation in Transition Metamaterials”. Physical Sciences and Technology, vol. 1, no. 2, July 2015, https://phst.kaznu.kz/index.php/journal/article/view/48.