1. Firm Resources and Sustained Competitive Advantage
2. Bowman, C. & Faulkner, D. (1996). Competitive and corporate strategy. Irwin.
3. Christensen, C. M. (1997). The innovator's dilemma: When new technologies cause great firms to fail. Harvard Business Press.
4. Hunt, M. S. (1972). Competition in the major home appliance industry: 1960–1970(Unpublished doctoral dissertation). Harvard University, Cambridge, MA.