Pino Campos, Luis Miguel. “Galen’s Doctrine about the Causes in the Pulses. V: The Natural Secundary Causes and the Non Natural Ones”. Fortunatae, no. 29 (February 15, 2019): 91–106. Accessed November 12, 2026. https://www.ull.es/revistas/index.php/fortvnatae/article/view/2852.