The impact of energy efficiency and economic productivity on CO 2 emission intensity in Portuguese tourism industries V. Moutinho C. Costa J.P.C. Bento Publication Journal: Tourism Management Perspectives Year of Publication: 2015 Volume: 16 Pagination: 217-227 Identifiers Other Numbers: 2-s2.0-84940530614 Alternative titles DOIGoogle ScholarBibTeXRIS Locators