1. Availability of Uranium at Various Prices from Resources in the US;Bieniewski,1971
2. Benchmarking the Energy Consumption of Canadian Open-Pit Mines;Canadian Industry Program for Energy Conservation,2005
3. Energy analysis of nuclear power stations;Chapman;Energy Policy,1975
4. Metal Resources and Energy;Chapman,1983
5. World uranium resources;Deffeyes;Sci. Am.,1980