Shales, S. W., Carden, A., Illman, A. M., & Scragg, A. H. (2002). Growth of microalgae with increased calorific values in a tubular bioreactor. Biomass and Bioenergy, 23(1), 67-73. https://doi.org/10.1016/S0961-9534%2802%2900028-4