1. Barbara, J. S. (2007). The false promise of biofuels. Special Report from the International Forum on Globalization and the Institute for Policy Studies (p. 30).
2. Sheehan, J., Dunahay, T., Benemann, J., & Roessler, P. (1998). A look back at the U.S. Department of Energy's Aquatic Species Program: Biodiesel from Algae. Close-Out Report, National Renewable Energy Laboratory, NREL/TP-580-24190.
3. Marland, G., Boden, T. A., & Andres, R. J. (2007). Global, regional, and national CO2 emissions. In Trends: A compendium of data on global change. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, United States Department of Energy, Oak Ridge, TN, USA.
4. McGriff, E. C., & McKenney, R. E. (1971). Activated algae: A nutrient process. Water & Sewage Works, 118, 377.
5. Oswald, W. J., Lee, E. W., Adan, B., & Yao, K. H. (1978). New waste water treatment method yields a harvest of saleable algae. WHO Chronicle, 32(9), 348–350.