1Barker,Michael D.,and John M.Nevison,(2000)."How Much is 10 Percent Worth?",pmNETWORK.
2JOHN M.NEVISON,P.M.P.,Multi-project Management:Executing the Details of the Project Portfolio (Part 1 of 2),2000Oak Associates,Inc.
3Paul C.Dinsmore,Winning in Business With Enterprise Project Management,PMI,1999.
4Fricke SE,Shenhar AJ.Managing multiple engineering projects in a manufacturing support environment.IIE Transactions on Engineering Management 2000; 47(2):258-68.