An a Priori Estimate for a Scalar Transmission Problem of the Laplacian in ℝ3. Global Journal of Science Frontier Research, [S. l.], v. 16, n. 18, p. 69–79, 2016. Disponível em: https://journalofscience.org/index.php/GJSFR/article/view/. Acesso em: 22 oct. 2026.