@article{article, title  = {{Who stopped flying around September 11?}},

 publisher = {{Informa UK Limited}},

 url = {{https://doi.org/10.1080/13504850701452031 }},

 year = {{2009}},

 month = {{8}},

 author = {{Webber DJ}},

 doi = {{10.1080/13504850701452031}},

 volume = {{16}},

 journal = {{Applied Economics Letters}},

 issue = {{13}},

 pages = {{1375-1381}},

 note = {{Accessed on 2025/11/08}}}