Vahí Serrano, Amalia. “Land and commercial guidance. Land heritage safeguard in the Autonomous Communities of Spain”. Anales de Geografía de la Universidad Complutense, vol. 30, vol. 30, no. 1, 2010, pp. 139-61, https://revistas.ucm.es/index.php/AGUC/article/view/AGUC1010120139A.