AL-JOHANI, D. S.; EL-SAFTAWY, M. I. Third Order Hamiltonian for a Binary System with Varying Masses Including Preastron Effect. JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 16, p. 8423–8429, 2019. DOI: 10.24297/jam.v16i0.8299. Disponível em: https://rajpub.com/index.php/jam/article/view/8299. Acesso em: 19 apr. 2024.