Štaras, S. and Katkevičius, A. (2010) “Properties of Helical Structures Containing Periodical Inhomogeneities”, Elektronika ir Elektrotechnika, 99(3), pp. 49–52. Available at: https://eejournal.ktu.lt/index.php/elt/article/view/9904 (Accessed: 8 February 2026).