HASAN JAWAD, Hayder. The Effect of Dwarf’s Planets Pluto and Eris upon Long Period Comets. Journal of Kufa-Physics, Kufa, Najaf, IRAQ, v. 9, n. 1, 2017. Disponível em: https://journal.uokufa.edu.iq/index.php/jkp/article/view/7353. Acesso em: 10 may. 2026.