RAMM, Alexander G. The Pompeiu problem. Global Journal of Mathematical Analysis, [S. l.], v. 1, n. 1, p. 1–10, 2013. DOI: 10.14419/gjma.v1i1.728. Disponível em: https://sciencepubco.com/index.php/GJMA/article/view/728.. Acesso em: 1 may. 2024.