References
- DoE . 1989 . Planning Control in Western Europe , London : HMSO . Department of the Environment
- ESTEBAN . “Instruments d'intervenció urbanistica” . Proceedings of the Congrés d'Urbanisme i Teritori de Catalunya . pp. IV.A.7
- Keyes , J , Munt , I and Riera , P . 1991 . “The land use planning system in Spain” . Department of Land Management and Development, University of Reading . working paper
- Marshall , T . 1990 . “Letter from ... Barcelona” . Planning Practice & Research , 5 ( 3 ) : 25 – 28 .