Mukhametkarimov, Y., Kudyshev, Z., Davletov, A., Gabitov, I., & Maimistov, A. (2012). Second harmonic generation in dissipative metamaterials. Recent Contributions to Physics, 2012(3), 5–62. Retrieved from https://bph.kaznu.kz/index.php/zhuzhu/article/view/709