COSTA DE BEAUREGARD, Olivier. El temps en física quàntica relativista. Enrahonar. An international journal of theoretical and practical reason, [S. l.], v. 15, p. 61–81, 1989. DOI: 10.5565/rev/enrahonar.765. Disponível em: https://revistes.uab.cat/enrahonar/article/view/v15-costa. Acesso em: 9 sep. 2026.