Guvenli, Kemal, Sibel Yenikaya, and Mustafa Secmen. “A Parallel Connected Hybrid Microstrip-Substrate Integrated Waveguide Bandstop Filter”. Elektronika ir Elektrotechnika 29, no. 6 (December 22, 2023): 26-32. Accessed March 1, 2024. https://eejournal.ktu.lt/index.php/elt/article/view/31628.