Olazabal, Eduardo, and Carmen Bellet. “From the Compact City to the Sprawled City. Recent Urbanisation Processes in Spanish Urban Areas Articulated by Middle-Sized Cities”. Anales de Geografía de la Universidad Complutense, vol. 39, no. 1, June 2019, pp. 149-75, https://doi.org/10.5209/aguc.64681.