(2012). VIA and Green procurement: opportunities to strengthen coordination. [Online] Database Science Direct 33. p.1-7. Available from: http://0-www.sciencedirect.com.innopac.wits.ac.za/science?_ob=ArticleListURL&_method=list&_ArticleListID=-762587333&_sort=r&_st=13&view=c&md5=328248631eff23205bb9d8d69a528200&searchtype=a. [Accessed: March 25, 2015]• Varnas, A., Balfors, B., Faith-Ell, C. (2009). Environmental consideration in construction contract procurement: Current practices, issues and opportunities in green procurement in the Swedish construction sector. [Online] Database Science Direct 17. p.1-9. Available from: http://0-www.sciencedirect.com.innopac.wits.ac.za/science?_ob=ArticleListURL&_method=list&_ArticleListID=-762587333&_sort=r&_st=13&view=c&md5=328248631eff23205bb9d8d69a528200&searchtype=a. [Accessed: March 25, 2015]• THE FEDERAL TRANSIT ADMINISTRATION. (2007) Construction Project Management Handbook. • GUO, H.L., LI, H. & SKITMORE. Life cycle management of construction projects based on Virtual Prototyping
tags