1. Armstrong, J. S. 1978. Long-range forecasting: From crystal ball to computer. John Wiley & Sons, New York.
2. Bandyopadhyay, J., and V. Shiva. 1985. The conflict over limestone quarrying in Doon Valley, Dehradune, India.Environmental Conservation 12(2):133–142.
3. Baumol, W. J., and W. E. Oates. 1979. Economics, environmental policy and the quality of life. Prentice Hall, New York.
4. Beanlands, G. E., and P. N. Duinker. 1983. An ecological framework for environmental impact assessment. Symposium papers. Environmental impact assessment symposium. Crete, 10–12 April.
5. Bhattacharya, J., P. Singh, P. De, and D. Dutt. 1987. Adoption of environmental strategies in the planning and operational phase of mine development.In S. C. Ray, G. B. Misra, S. D. Barve, M. N. Biswas, and N. Mukherjee (eds.), Proceedings of the national seminar on environmental pollution and control in mining, coal and mineral based industries. Indian Institute of Technology, Kharagpur. 13–15 February, pp. 61–70.