A Quadruple Integral Involving the Legendre Function Pn(x) of the First Kind: Derivation and Evaluation. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 15, n. 3, p. 1113–1119, 2022. DOI: 10.29020/nybg.ejpam.v15i3.4237. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/4237. Acesso em: 4 dec. 2024.