Sousa, Sílvia, and Paulo Pinho. “Shrinkage in Portuguese National Policy and Regional Spatial Plans: Concern or Unspoken Word?”. Journal of Tourism, Sustainability and Well-being 2, no. 4 (December 31, 2014): 260–275. Accessed October 27, 2025. https://journals.cinturs.pt/jtsw/article/view/35.