Rodrigues de Oliveira, Silvana. “Letters Between Alejandro Herrero and Félix Candela: Friendship, Architecture, and Construction Techniques”. ZARCH. Journal of interdisciplinary studies in Architecture and Urbanism, no. 19 (February 11, 2023): 224–239. Accessed December 5, 2025. https://papiro.unizar.es/ojs/index.php/zarch/article/view/6938.