The evolution in holiday travel facilities and in the flow of tourism inside and outside the european community [[policopiado]] / Tourconsult International, Tourconsult Italy; col. European Travel Data Centre
Price competitiveness of holiday destinations : costs for european travellers / by Anthony Edwards
La competitivité des destinations touristiques à longue distance
All-season tourism: analysis of experience, suitable products and clientele / DG XXIII
A fauna exótica dos Descobrimentos / António Luís Ferronha