8H.Murat Gunaydin,S.Zeynep Dogan.A neural network approach for early cost estimation of structural systems of buildings[].International Journal of Project Management.2004
9R. Martin skitmorea,S. Thomas Ngb.Forecast models for actual construction time and cost[].Building and Environment.2003
10McCaffer R.Some examples of the use of regression anal-ysis as an estimating tool[].Quantity Surveyor.1975