TY - JOUR T1 - Who stopped flying around September 11? JO - Applied Economics Letters PY - 2009/08/06 AU - Webber DJ ED - DO - DOI: 10.1080/13504850701452031 PB - Informa UK Limited VL - 16 IS - 13 SP - 1375 EP - 1381 Y2 - 2024/12/22 ER -