KISSIN, Y. V. Natural Sciences: Definitions and Attempt at Classification. Cosmos and History: The Journal of Natural and Social Philosophy, [S. l.], v. 9, n. 2, p. 116–137, 2013. Disponível em: https://cosmosandhistory.org/index.php/journal/article/view/372. Acesso em: 9 dec. 2021.