1. McGrath, M. E.: Product Strategy for High-Technology Companies, New York 1995.
2. Simpson, T. W.: A Concept Exploration Method for Product Family Design, Atlanta 1998.
3. Dixon, J. R. et al.: A Proposed Taxonomy of Mechanical Design Problems, in: Computers in Engineering Conference, San Francisco 1988, pp. 41–46.
4. Martin, M. V.; Ishii, K.: Design for Variety: Development of Complexity Indices and Design Charts, in: 1997 ASME Design for Manufacturing Conference, Sacramento 1997.
5. Chen, W.; Rosen, D.; Allen, J.; Mistree, F.: Modularity and the Independence of Functional Requirements in Designing Complex Systems, in: Concurrent Product Design, 74 (1994), pp. 31–38.