NOVAKOVIC, Branko. Cyclic Universe Motion in Relativistic Radial Density Theory . European Journal of Applied Sciences, [S. l.], v. 14, n. 02, p. 175–185, 2026. Disponível em: https://scholarpublishing.org/journals/index.php/EJAS/article/view/73. Acesso em: 4 may. 2026.