A New Efficient Method for solving Helmholtz and Coupled Helmholtz Equations Involving Local Fractional Operators. University of Thi-Qar Journal of Science, [S. l.], v. 6, n. 4, p. 153–157, 2019. Disponível em: https://jsci.utq.edu.iq/index.php/main/article/view/81.. Acesso em: 3 may. 2024.