1. Defining the Business: The Starting Point of Strategic Planning;Abell,1980
2. Product newness and market advantage: risk control through technological innovation;Abetti,1989
3. The New Corporate Strategy;Ansoff,1988
4. Organizational theories: some criteria for evaluation;Bacharach;Academy of Management Review,1989
5. Entrepreneurship in economic theory;Baumol;American Economic Review,1968