Valma, E., M. Tamosiunaite, S. Tamosiunas, M. Tamosiuniene, and M. Zilinskas. “Variation of Radio Refractivity With Height above Ground”. Elektronika ir Elektrotechnika 111, no. 5 (June 8, 2011): 23-26. Accessed April 26, 2024. https://eejournal.ktu.lt/index.php/elt/article/view/349.