J. P. Jorge, V. Oliveira, F. Oliveira, L. L. Santos, A. S. Viana, and C. Malheiros, “The planning system in Portugal”, in Contemporary challenges of spatial planning in tourism destinations, T. Napierała, K. Leśniewska-Napierała, and G. Cotella, Eds. Poland: Lodz University Press, 2022, pp. 91–110. doi: 10.18778/8331-149-4.05.