Staras, S., J. Skudutis, and A. Kleiza. “Electrodynamical Analysis of the Non-Homogeneous Helical Systems”. Elektronika ir Elektrotechnika 10, no. 1 (February 14, 1997). Accessed December 4, 2024. https://eejournal.ktu.lt/index.php/elt/article/view/15721.