1.		Tourism demand forecasting models : choice of appopriate variable to represent tourists'cost of living / Christine A. Martin, Stephen F. Witt Autor: Martin, Christine A. Coautor: ; Witt, Stephen F
2.		Substitute prices in models of tourism demand / Christine A. Martin, Stephen F. Witt Autor: Martin, Christine A. Coautor: ; Witt, Stephen F
3.		Accuracy of econometric forecasts of tourism / Christine A. Martin, Stephen F. Witt Autor: Martin, Christine A. Coautor: ; Witt, Stephen F
4.		Demand forecasting in tourism and recreation / S.F. Witt, C.A. Martin Autor: Witt, Stephen F Coautor: ; Martin, Christine A.