Матвєєва, О.Л., І.А. Кравець, and Л.М. Курок. “Gravity Determination of Energy Chemical Elements”. Proceedings of National Aviation University 20, no. 2 (February 1, 2004): 129–133. Accessed October 20, 2024. https://jrnl.nau.edu.ua/index.php/visnik/article/view/1018.