TY  - CHAP
TI  - Determining the similarity between US cities using a gravity model for search engine query data
AF  - GfKl2011
PP  - Frankfurt/Main
PY  - 2011-09-01
AU  - Hofmarcher, Paul 
AU  - Grün, Bettina 
AU  - Mair, Patrick 
AU  - Hornik, Kurt 
ER -