Submitted on: 23 November 2010.
Revised on: 11 January 2011.
Accepted on: 15 February 2011.
___________________JOURNAL OF AIR TRANSPORT MANAGEMENT
Submitted on: 06 June 2004.
Revised on: 28 August 2004.
Accepted on: 21 September 2004.
___________________JOURNAL OF AIR TRANSPORT MANAGEMENT
Submitted on: 26 December 2017.
Revised on: 16 February 2018.
Accepted on: 30 March 2018.
___________________JOURNAL OF AIR TRANSPORT MANAGEMENT
Submitted on: 26 July 2015.
Revised on: 03 October 2015.
Accepted on: 08 November 2015.
___________________JOURNAL OF AIR TRANSPORT MANAGEMENT
http://reply.papertrans.cn/2/152/15192/15192-35.png
Submitted on: 27 July 2003.
Revised on: 24 September 2003.
Accepted on: 25 October 2003.
___________________JOURNAL OF AIR TRANSPORT MANAGEMENT