Obiala-Ezenwa, E., M. Ma, a-Sánchez., J. Re, and noso-Hernández. “Improved Method for Extracting the Equivalent Circuit Elements of a CRLH-TL Unit Cell”. Revista Mexicana De Física, vol. 61, no. 2 Mar-Apr, Jan. 2015, pp. 112-0, https://rmf.smf.mx/ojs/index.php/rmf/article/view/4129.