1. Al-Ashaab, A., Shehab, E., Alam, R., Sopelana, A., Sorli, M., Flores, M., Taisch, M., Dragan Stokic, D. and James-Moore, M., (2010), “The Conceptual LeanPPD Model”, The LeanPD Special Session of the 17th ISPE International Conference on Concurrent Engineering 2010, 6-10 September 2010, Cracow, Poland.
2. Arnott, B. (2004), “The 8 Disciplines Approach to Problem Solving”, Certified Infrared Thermographer, Infraspection institute, Ontario Canada.
3. Borton, T. (1970), “Reach, touch and teach: Student concerns and process education”, New York: McGraw Hill.
4. Domb, E. and Radeka, K. (2006), “LAMDA and TRIZ: Knowledge Sharing Across the Enterprise”, available at: http://www.triz-journal.com/archives/2009/04/04/(accessed 21 December 2011).
5. Mahto,D. and Kumar,A. (2008), “Application of root cause analysis in improvement of product quality and productivity”, Journal of Industrial Engineering and Management. Vol.1 Issue 2, pp16-53.