Media type: E-Article Title: Why costs overrun: risk, optimism and uncertainty in budgeting for the London 2012 Olympic Games Contributor: Jennings, Will Published: Informa UK Limited, 2012 Published in: Construction Management and Economics, 30 (2012) 6, Seite 455-462 Language: English DOI: 10.1080/01446193.2012.668200 ISSN: 1466-433X; 0144-6193 Origination: Footnote: