1. Discovering the basis of competition in 12 industries: Computerized content analysis of interview data from the US and Europe;Birnbaum-More,1990
2. Soft systems methodology;Checkland,1989
3. Planning as learning;de Geus;Harvard Business Review,1988
4. Using cognitive mapping for strategic options development;Eden,1989
5. Managing the environment as a means to managing complexity;Eden,1990