Impact of postponement on transportation: An environmental perspective

Yang, Ying, Yang, Biao, and Wijngaard, Jacob, ' Impact of postponement on transportation: An environmental perspective', International Journal of Logistics Management (2005) 16(2) pp.192-204 RAE2008

An econometric analysis of international air travel demand in Saudi Arabia

Abed, S. Y., Ba-Fail, A. O., & Jasimuddin, S. (2001). An econometric analysis of international air travel demand in Saudi Arabia. Journal of Air Transport Management, 7(3), 143-148 RAE2008