1. Competing for the Future;Hamel,1994
2. 20/20 Foresight: Crafting Strategy in an Uncertain World;Courtney,2001
3. Scenarios: shooting the rapids;Wack;Harvard Business Review,1985
4. Scenarios: uncharted waters ahead;Wack;Harvard Business Review,1985
5. Integrating scenarios into strategic planning at royal dutch/shell;Schoemaker;Planning Review,1992