1. The Changing Role of Specialist and Trade Contractors;Gray;The Chartered Institute of Building, Ascot,1989
2. Economics;Lipsey,1978
3. Site Pre-cast Yard Layout Arrangement Through Genetic Algorithms;Cheung;Journal of Automation in Construction,2002
4. Genetic Algorithm Model in Optimising Labour Utilization;Tam;Journal of Construction Management and Economics, UK,2001