1. Abernathy, W.J., Utterback, J., 1978. Patterns of industrial innovation. Technology Review (June–July).
2. Toshiba: information systems from mainframes to laptops and notebook computers;Abetti,1992
3. Perspectives on Experience;Anon,1972
4. Arrow, K., 1962. The economic implications of learning by doing. Review of Economic Studies (June), 155–173.
5. A challenge of low development;Baranson,1967