1. Pries-Heje, J., Johansen, J., (eds.): MANIFESTO Software Process Improvement. eurospi.net, Alcala, Spain (2010).
http://www.iscn.com/Images/SPI_Manifesto_A.1.2.2010.pdf
2. ISO/IEC 33020: 2014 - Information technology—Process assessment—Process measurement framework for assessment of process capability (2014)
3. Kuvaja, P., Similä, J., Krzanik, L., Bicego, A., Saukkonen, S., Koch, G.: Software Process Assessment & Improvement: The Bootstrap Approach. Blackwell, Oxford (1994). ISBN 0-631-19663-3
4. von Wangenheim, C.G., Hauck, J.C.R., Salviano, C.F., von Wangenehim, A.: Systematic literature review of software capability/maturity models. In: Rout, T., Lami, G., Fabbrini, F. (eds.) 2010 Proceedings of 10th International SPICE Conference, Pisa (2010). ISBN 978-884672663-6
5. Stallinger, F., Neumann, R., Vollmer, J., Plösch, R.: Assessing reuse maturity in complex system engineering contexts, experiences and results from the industrial engineering domain. In: Rout, T., Lami, G., Fabbrini, F. (eds.) 2010 Proceedings of 10th International SPICE Conference, Pisa (2010). ISBN 978-884672663-6