V. Urbanavičius, Š. Mikučionis, and R. Martavičius, “Model of the Coupled Transmission Lines with a non-uniform Dielectric”, ELEKTRON ELEKTROTECH, vol. 77, no. 5, pp. 23–28, May 2007, Accessed: Feb. 08, 2026. [Online]. Available: https://eejournal.ktu.lt/index.php/elt/article/view/10732