Tung NT, Hoai PV, Binh NT, Hong LV, Lam VD, Lee YP. {Demonstrate the Double Negative Behavior of Metamaterial Using the Effective Medium Theory. Comm. Phys. [Internet]. 2012 Aug. 13 [cited 2024 Apr. 27];20(1):83. Available from: https://vjs.ac.vn/index.php/cip/article/view/2009