1. G. Boothroyd and P. Dewhurst, “Product design for manufacture and assembly”, report no. 21, Industrial and Manufacturing Engineering Department, University of Rhode Island, 1988.
2. G. Boothroyd and P. Radnovanovic, “Estimating the cost of machined parts during the conceptual design of a product”, report no. 32, Industrial and Manufacturing Engineering Department, University of Rhode Island, 1989.
3. P. Dewhurst and D. Archer, “Cost estimating for injection molded parts”, report no. 19, Industrial and Manufacturing Engineering Department, University of Rhode Island, 1987.
4. A. Fumo and W. A. Knight, “Early cost estimating for sintered powder metal parts”,Proceedings of Third International Conference on Product Design for Manufacture and Assembly, Newport, RI, June 1988.
5. W. A. Knight and C. Poli,Design for Forging Handbook, University of Massachusetts, 1982.