Bhaskar, Manju, and Thomaskutty Mathew. “Microstrip Dual Mode Multi-Bandpass Filters Based on Tree Fractal Slotted Resonator for Wireless Communication”. Indonesian Journal of Electrical Engineering and Informatics (IJEEI) 7, no. 3 (September 5, 2019): 484–493. Accessed October 28, 2026. https://section.iaesonline.com/index.php/IJEEI/article/view/1053.