1. Soto-Acosta, P., Martínez-Conesa, I., Colomo-Palacios, R.: An empirical analysis of the relationship between IT training sources and IT value. Information Systems Management 27(3), 274–283 (2010)
2. Gupta, J.N., Sharma, S.K., Hsu, J.: An Overview of Knowledge Management. In: Jennex, M. (ed.) Knowledge Management: Concepts, Methodologies, Tools, and Applications, pp. 1–22. Information Science Reference, Hershey (2008), doi:10.4018/978-1-59904-933-5.ch001
3. Molina, J.L., Marsal, M.: Herramientas de gestión del conocimiento; Gestión del cambio. In: La gestión del conocimiento en las organizaciones, pp. 60–68, 87–94, Colección de Negocios, Empresa y Economía. Libros en red (2002)
4. Turban, E., Aronson, J.E., Liang, T.-P.: Knowledge management. In: Decision Support Systems and Intelligent Systems, pp. 1–23. Perentice Hall, Uppers Saddle River (2005)
5. CMMI working group, The Economics of CMMI®, NDIA System Engineering Division, Software Engineering Institute, 1, 9-21 (2009),
http://www.sei.cmu.edu/library/assets/Economics%20of%20CMMI.pdf