1. Perrow, C.: Normal Accidents. Princeton University Press, Princeton (1984)
2. Herlitz, I.: The Dynamic Stability of Long Transmission Lines. Royal Institute of Technology, Stockholm (1928)
3. Fridlund, M.: Den gemensamma utvecklingen. Symposion, Eslöv (1999)
4. Mindell, D.: Between Human and Machine. Johns Hopkins University Press, Baltimore (2002)
5. Interview with Åke Ölwegård by the author