Zhaomin Ren Tarek M. Hassan Chimay J. Anumba The engineering services of a universal e-Engineering Hub: Application to the construction industry. 545-557 2008 39 Advances in Engineering Software 7 http://dx.doi.org/10.1016/j.advengsoft.2007.07.008 db/journals/aes/aes39.html#RenHA08