1. “QFD - Integrating Customer Requirements into Product Design”;Akao,1990
2. “Product Design for Assembly, Handbook”;Boothroyd,1987
3. “Evaluation Tool for Modular Design”;Erixon,1993
4. “Modularise your product”;Erixon,1994
5. “Engineering Design - A Systematic Approach”;Pahl,1988