1.		Analysing determinants of visitor spending for the rural tourist market in North Portugal / Elisabeth Kastenholz Autor: Kastenholz, Elisabeth COTA(S): RE-1822
2.		Culture and local development / OECD Data Publicação: 2005 Col.autor: OECD COTA(S): 16337
3.		Tourism as an International traded service : A guide for measuring arrivals and associated expenditures of non-residents Data Publicação: 2005 Col.autor: OMT COTA(S): 17771