1. Competing for the Future;Hamel,1994
2. Prices and Quantities: A Macroeconomic Analysis;Okun,1981
3. Competitive Advantage: Creating and Sustaining Superior Performance;Porter,1985
4. The emerging paradigm of strategic behaviour;Ansoff;Strateg. Manage. J.,1987
5. Scanning the periphery;Day;Harv. Bus. Rev.,2005