Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: parent exact "Proceedings of the 104th Annual Meeting of the Association of American Geographers" Add to list Conference Paper C1 Measuring hierarchical differentiation in the European airline network after deregulation: an empirical analysis based on air passenger flows Ben Derudder (UGent) , Nathalie Van Nuffel (UGent) and Frank Witlox (UGent) (2008) Proceedings of the 104th Annual Meeting of the Association of American Geographers. p.1-1