1.		The future outlook for Portuguese travel agents / A. George Assaf, Carlos Pestana Barros, Luiz Pinto Machado Autor: Assaf, A. George Coautor: ; Barros, Carlos Pestana Machado, Luiz Pinto
2.		European vs. U.S. airlines: Performance comparison in a dynamic market / A. George Assaf, Alexander Josiassen Autor: Assaf, A. George Coautor: ; Josiassen , Alexander
3.		Benchmarking international tourism destinations / A. George Assaf, Larry Dwyer Autor: Assaf, A. George Coautor: ; Dwyer, Larry
4.		The estimation and decomposition of tourism productivity / A. George Assaf and Mike Tsionas Autor: Assaf, A. George Coautor: ; Tsionas, Mike, co-autor