Garg, Bimal, et al. “Design of Rectangular Microstrip Patch Antenna Incorporated With Innovative Metamaterial Structure for Dual Band Operation and Amelioration in Patch Antenna Parameters With Negative µ and ?”. International Journal of Engineering & Technology, vol. 1, no. 3, July 2012, pp. 205-16, https://doi.org/10.14419/ijet.v1i3.124.