1. Rittel HWJ (1988) The reasoning of designers. (Arbeitspapier zum international congress on planning and design theory, Boston, August 1987.) Universität Stuttgart: Schriftenreihe des Instituts für Grundlagen der Planung
2. Perrow C (1984) Normal accidents. Basic Books, New York
3. von Foerster H (2002) Understanding systems: conversations on epistemology and ethics (IFSR International series in systems science and systems engineering, vol 17.) Springer, Berlin
4. Lovins AB, Lovins LH (1982) Brittle power. Brick House Publishing Co, Andover, MA
5. Zwetsloot GIJM et al (2013) The case for research into the zero accident vision. Saf Sci 58:41–48