TY  - JOUR
AU  - Khaksar, Mansoor
AU  - shafei, reza
AU  - Visi, Bahare allah
TI  - Recognition the risk roots in constructional projects and the methods of their management. (A case study)
JO  - The Journal of Productivity Management
VL  - 2
IS  - 4
SP  - 139
EP  - 160
PY  - 2009
DO  - 
ER  -