Afroz, Sadia, et al. “On Thin Flexible Wideband Printed Vivaldi Antenna for Sub-6 GHz Wearable Applications”. International Journal of Integrated Engineering, vol. 17, no. 6, Dec. 2025, pp. 135-46, https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/21930.