Sky commons as a basis to explore the touristic potential of the Alqueva area (Portugal) Á. Rodrigues J.A. Filipe Publication Book Title: Modeling and New Trends in Tourism: A Contribution to Social and Economic Development Year of Publication: 2016 Pagination: 285-301 Identifiers ISBN Number: 9781634859431 9781634859202 Other Numbers: 2-s2.0-85029958712 Alternative titles Google ScholarBibTeXRIS Locators