S. Irum Jafri, Rashid Saleem, and Khawar Khokhar. “CPW-Fed UWB Antenna With Tri-Band Frequency Notch Functionality”. Applied Computational Electromagnetics Society Journal (ACES), vol. 34, no. 09, Sept. 2019, pp. 1274-9, https://journals.riverpublishers.com/index.php/ACES/article/view/8207.