Media type: E-Article Title: The validity of the monocentric city model in a polycentric age: US metropolitan areas in 1990, 2000 and 2010 Contributor: Arribas-Bel, Daniel; Sanz-Gracia, Fernando imprint: Informa UK Limited, 2014 Published in: Urban Geography Language: English DOI: 10.1080/02723638.2014.940693 ISSN: 0272-3638; 1938-2847 Keywords: Urban Studies ; Geography, Planning and Development Origination: Footnote: