Media type: E-Article Title: Detecting the existence of space–time clustering of firms Contributor: Arbia, Giuseppe; Espa, Giuseppe; Giuliani, Diego; Mazzitelli, Andrea imprint: Elsevier BV, 2010 Published in: Regional Science and Urban Economics Language: English DOI: 10.1016/j.regsciurbeco.2009.10.004 ISSN: 0166-0462 Keywords: Urban Studies ; Economics and Econometrics Origination: Footnote: