Da Ruan D. Maes H. Ait J. Liu L. Xu J. B. Yang Cost Estimations for Large Scale Engineering Projects under Uncertainties. 955-960 2005 EUSFLAT Conf. http://www.eusflat.org/proceedings/EUSFLAT-LFA_2005/papers/JEL175.pdf conf/eusflat/2005 db/conf/eusflat/eusflat2005.html#RuanMALXY05