1. Air Transport Association (2003). Airlines in crisis: the perfect economic storm. Air Transport Association: Washington, D.C.
2. The airline deregulation evolution continues: the southwest effect;Bennett,1993
3. EasyReg International;Bierens,2003
4. Market incentives for safe commercial airline operation;Borenstein;American Economic Review,1988
5. Airport congestion when carriers have market power;Brueckner;American Economic Review,2002