1. Stevens, G.A., Burley, J.: 3,000 raw ideas = 1 commercial success? Research Technology Management 40(3), 16–27 (1997)
2. Dandy, G., Walker, D., Trevor, D., Warner, R.: Planning and Design of Engineering Systems, 2nd edn., p. 99. Taylor & Francis, Abingdon (2008)
3. Stasch, S.F., Lonsdale, R.T., LaVenka, N.M.: Developing a Framework for Sources of New Product Ideas. Journal of Consumer Marketing 9(2), 5–15 (1992)
4. Flint, D.J.: Compressing new product success-to-success cycle time deep customer value understanding and idea generation. Industrial Marketing Management 31(4), 305–315 (2002)
5. Adams-Bigelow, M.: First Results from the 2003 Comparative Performance Assessment Study (CPAS). In: Kahn, K.B., Castellion, G., Griffin, A. (eds.) The PDMA Handbook of New Product Development, 2nd edn., ch. 36, pp. 546–566. John Wiley & Sons, Inc., Hoboken (2005)