Calo, Estefanía, and Emma López-Bahut. “Alternative Models of Access to and Production of Housing in Spain: The Bottom-up Processes ”. ZARCH. Journal of interdisciplinary studies in Architecture and Urbanism, no. 21 (December 31, 2023): 144–157. Accessed December 5, 2025. https://papiro.unizar.es/ojs/index.php/zarch/article/view/8919.