MAITRA, N. K. Hermann von Helmholtz (1821-1884). Indian Science Cruiser, [S. l.], v. 10, n. 1, p. 11–13, 1996. Disponível em: http://mail.informaticsjournals.com/index.php/ISC/article/view/42668. Acesso em: 1 oct. 2024.