1. Beer, S. (1985): Diagnosing the system for organizations. Chichester: John Wiley & Sons.
2. Beer, S. (1995): Brain of the firm. 2nd Ed. Chichester: John Wiley & Sons.
3. Böhnisch, W. (1975). “Personale Innovationswiderstände”. In: Gaugler, E. (Ed.): Handwörterbuch des Personalwesens: 1046–1061. Stuttgart: Poeschel.
4. DanWatch: 2008, ‘Bad Connections – How Your Mobile Phone is Linked to Abuse, Fraud and Unfair Mining Practices in DR Congo’, http://www.consumersinternational.org/shared_asp_files/GFSR.asp?NodeID=97663&bcsi_scan_3EAB0ABF9D901350=0&bcsi_scan_filename=GFSR.asp .
5. Ericsson: 2007, ‘Sustainable Energy Use in Mobile Communications’. EAB-07:021801 Uen Rev C. http://www.ericsson.com/technology/whitepapers/telecom_expansion/sustainable_energy_use.shtml .