Aqsa Javed, Asma Ejaz, Sumrin Mehak, Yasar Amin, Jonathan Loo, and Hannu Tenhunen. “Miniaturized Cross-Lines Rectangular Ring-Shaped Flexible Multiband Antenna”. Applied Computational Electromagnetics Society Journal (ACES), vol. 34, no. 05, May 2019, pp. 625-30, https://journals.riverpublishers.com/index.php/ACES/article/view/8449.