Ülen, Simon, in Tanja Holc. „Hitrost Gibanja sončevih Peg“. Pomurska obzorja 4, no. 7 (april 12, 2022): 4–11. Pridobljeno november 10, 2025. https://old.journals.um.si/index.php/pomurska-obzorja/article/view/1788.