Ramírez, Ernesto Fernando Ferreyra, and Saide Jorge Calil. “Clinical Engineering: Part I - Origins (1942 - 1996)”. Semina: Ciências Exatas e Tecnológicas 21, no. 4 (December 15, 2004): 27–33. Accessed February 17, 2025. https://ojs.uel.br/revistas/uel/index.php/semexatas/article/view/3009.