Growth and Chebyshev Approximation of Entire Function Solution of Helmholtz Equation in R2. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 3, n. 6, p. 1062–1069, 2010. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/782.. Acesso em: 8 may. 2024.