THAMM, F. DIE BILDFEHLER DES EINFACHEN POLARISKOPS. Periodica Polytechnica Mechanical Engineering, [S. l.], v. 4, n. 1, p. 19–40, 1960. Disponível em: https://pp.bme.hu/me/article/view/6387. Acesso em: 2 may. 2024.