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Geo-located Twitter as proxy for global mobility patterns.
Hawelka B, Sitko I, Beinat E, Sobolevsky S, Kazakopoulos P, Ratti C. Hawelka B, et al. Among authors: beinat e. Cartogr Geogr Inf Sci. 2014 May 27;41(3):260-271. doi: 10.1080/15230406.2014.890072. Epub 2014 Feb 26. Cartogr Geogr Inf Sci. 2014. PMID: 27019645 Free PMC article.