1. Anastasopoulos, P.1984 Interdependencies in International Travel: The Role of Relative Prices; A Case Study of the Mediterranean Region. Dissertation, Graduate Faculty of Political and Social Science of the New School for Social Research.
2. Demand for travel
3. Clarke, C. D.1978 An Analysis of the Determinants of Demand for Tourism in Barbados. Dissertation, Department of Economics at Fordham University.
4. Main destination ratios
5. Market shares of US tourist expenditure in Europe: an econometric analysis