TY  - BOOK
AU  - Berry, Steven
AU  - Spiller Pablo T
AU  - Carnall Michael
AU  - National Bureau Of Economic Research
TI  - Airline hubs: costs, markups and the implications of customer heterogeneity
T2  - NBER working paper series
U1  - WP 5561 
PY  - 1996///
CY  - Cambridge, MA
PB  - NBER
ER  -