KHALAF, A. J. M.; HANOON, W. H. Solving Some Kinds of Third Order Partial Differential Equations of Degree Four with Three Independent Variables. JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 9, n. 5, p. 2653–2676, 2014. DOI: 10.24297/jam.v9i5.2354. Disponível em: https://rajpub.com/index.php/jam/article/view/2354. Acesso em: 3 jul. 2024.