Systeemonveiligheid : een inventarisatie van de toestand. Bijdragen van ir. E. Asmussen voor het symposium "Universitair onderwijs en onderzoek in veiligheid", TH-Delft, 11 oktober 1978.

An accident must be considered as a multi causal choice phenmenon. An inventory of the situation as regards the unsafety in the different systems of dwelling, occupation and transport covers not only data which show the sincerety of the situation but also the questions: What is being done; What can be done and How can it be organised. See also B 15000 and B 15025.