Economic impact and travel patterns of accessible tourism in Europe - final report / European Commission
Recommendations on accessible tourism / WTO
Roteiro tecnológico- Portugal energia e turismo / EnergyIN – Pólo de Competitividade e Tecnologia da Energia, Turismo 2015 - Pólo de Competitividade e Tecnologia do Turismo
Guide on EU funding 2014-2020 : for the tourism sector / EC-Directorate-General for Enterprise and Industry