1. The Bureaucratic Phenomenon;Crozier,1964
2. Management Rapportage;Geels,1991
3. Management and Executive Information Systems (1991);Flikweert,1991
4. Trendbreuk: multi-projectplanning vereist andere unitgangspunten;Platje;Software Magazine,1992
5. Chaos: Making a New Science;Gleick,1987