3WANG W C. Electronic - based procedure for manag- ing unbalanced bids [ J ]. Journal of Construction Engi- neering and Management, 2014 ( 3 ) : 455 - 460.
4PABLO B P. Detecting abnormal and collusive bids in caped tendering [ J ]. Automation in Construction, 2013(3) :215 -229.
5PADHI S S. Detection of ~collusion in government procurement auctions [ J ]. Journal of Purchasing & Supply Management ,2011 (17) :207 - 221.
