ELEK, T. NOCHMALs: ZUR FRAGE DES PHILOSOPHISCHEN INHALTS DER RELATIVITÄTSTHEORIE Periodica Polytechnica Electrical Engineering, [S. l.], v. 6, n. 2, p. 149–183, 1962. Disponível em: https://pp.bme.hu/ee/article/view/5321. Acesso em: 18 may. 2024.