1. Abell, D. F. (1980). Defining the business: the starting point of strategic planning. Englewood Cliffs.
2. Nightingale, J. (1978). On the definition of `industry’ and `market’. The Journal of Industrial Economics., 27(1), 31–40. https://doi.org/10.2307/2098116
3. Porter, M. E. (1979). How competitive forces shape strategy. Harvard Business Review., 57, 137–145.
4. Wadegaonkar, D. W. (1981). Concept of industry. Journal Indian Law Institute., 23(3), 400–420.
5. Juyal, S., & Chander, S. (2018) Zero Emission Vehicles (ZEVs): Towards a Policy Framework. New Delhi: NITI Aayog and World Energy Council