Asim Quddus, Rashid Saleem, M. Farhan Shafique, and Sabihur Rehman. “Compact Quad Element UWB-MIMO Antenna With Electronically Reconfigurable WiMAX Band-Stop Capability”. The Applied Computational Electromagnetics Society Journal (ACES), vol. 34, no. 08, Aug. 2019, pp. 1258-61, https://journals.riverpublishers.com/index.php/ACES/article/view/8313.