BARTLETT, A. J. Ringing in the Sheaves. Cosmos and History: The Journal of Natural and Social Philosophy, [S. l.], v. 2, n. 1-2, p. 339–344, 2006. Disponível em: https://cosmosandhistory.org/index.php/journal/article/view/43. Acesso em: 9 dec. 2021.