6Jan J. Construction Site Productivity Measurement : Selection, Application and Evaluation of Methods and Measures [ D]. Doctoral Thesis Summary,Lulea University of Technology, 1996. Accessed from http://epubl, luth. se/avslutade/ 0348 - 8373/185/index - en. html on June 12,2009.
7National Steering Committee for Innovation in Construction (NSCIC). The Construction Industry as a Place to Invest [ EB ]. Presentation from the NSCIC' s Second Canadian Construction Innovation Forum : Building a Strategy for Tomorrow, 2003.
8Edvarsen D. F. Efficiency of Norwegian Construction Firms [ D 1. School of Economics and Commercial Law, Goterborg University, 2003.
9Nguyen Khac Minh ,Giang Thanh Long. Efficiency of Construction Firms in Vietnam [ C]. MPRA Paper No. 2872, 2007.7.
10El - Mashaleh M, O' Brien W J, London K et al. Envelopment Methodology to Measure and Compare Subcontraclor Productivity at the Firm Level [ DB ]. Accessed from http://cic. vtt. fi/leart/singapore/E1 - Mashelehetal. pdf on May 22,2009.
