| 1. | Econometric forecasts : tourism trends to 2000 / Egon Smeral, Stephen F. Witt, Christine A. WittAutor: Smeral, Egon Coautor: ; Witt, Stephen F |  | |
| 2. | Econometric forecasts of tourism demand to 2005 / Egon Smeral, Stephen F. WittAutor: Smeral, Egon Coautor: ; Witt, Stephen F | | |
| 3. | Varying elasticities and forecasting performance / Egon Smeral, Haiyan SongAutor: Smeral, Egon Coautor: ; Haiyan, Song COTA(S): RE-1610 | | |
| 4. | The decline of tourism income elasticities in a global context / Ulrich Gunter and Egon SmeralAutor: Gunter, Ulrich Coautor: ; Smeral, Egon COTA(S): RE-1822 | | |