Brantt, Maria Graciela. “The Requirement of Externality in the Fortuitous Case: Its Determination from the Distribution of the Risks of the Contract”. Pro Jure Revista de Derecho - Pontificia Universidad Católica de Valparaíso 33, no. 2 (October 21, 2010). Accessed September 7, 2026. https://www.projurepucv.cl/index.php/rderecho/article/view/703.