1. Strategies appropriate for differing stages of industry evolution see Porter, M. E. (1980) Competitive Strategy (New York: Free Press) Chs 9, 10, 11, and 12.
2. For the relationship of diversification to performance see Reed, R. and Luffman, G. (1984) The Strategy & Performance of British Industry, 1970–80 (London: Macmillan) Chs 5, 6, and 7.
3. Turnaround strategies are discussed in Slatter, S. (1984) Corporate Recovery (Harmondsworth: Penguin) Chs 2, 3, 4, and 5.