1. Aaron K (2007) SITA survey: choice is key to encouraging self-service. Air Transp World 76–80
2. Air Transport Association (2010) Prices of air travel versus other goods and services. www.airlines.org/Economics/DataAnalysis/Pages/PriceofAirTravel-VersusOtherGoodsandServices.aspx Accessed on May 17, 2010
3. AirTran Holdings Inc (2009) Annual report to shareholders. http://investor.airtran.com/phoenix.zhtml?c=64267&p=irol-reportsAnnual Accessed on June 24, 2010
4. Ben-Yosef E (2005) The evolution of the US Airline Industry: theory, strategy, and policy. Springer, Dordrecht
5. Besbes O, Zeevi A (2006) Implications of choice model parameter estimation in a competitive environment. Working Paper, Stern School of Business, New York University