1. Acker, R and Kammen, D M (1994) unpublished data
2. The Case for a Solar Initiative;Anderson,1994
3. The world PV market: 1993 status report and future prospects;Barlow,1994
4. Prospects for the Expansion of Solar PV Technology in the Developing World: Financial Mechanisms and Transfer Optimization;Barozzi,1993
5. Economic Survey;Central Bureau of Statistics,1994