MAHBOD, M.; MAHBOD, M. R.; MAHBOD, A. M. Application Of Differential Equations In Spherical Space. JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 9, n. 9, p. 3072–3084, 2015. DOI: 10.24297/jam.v9i9.2238. Disponível em: https://rajpub.com/index.php/jam/article/view/9-9-2238. Acesso em: 7 may. 2024.