LUC, L. T. The inverse source problems for the Helmholtz operators. Journal of Computer Science and Cybernetics, [S. l.], v. 12, n. 3, p. 82–96, 2016. DOI: 10.15625/1813-9663/12/3/8087. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/8087. Acesso em: 5 may. 2024.