Shen, Ying, Zhijian Pei, Wenqiao Yuan, and Enrong Mao. 2009. “Effect of Nitrogen and Extraction Method on Algae Lipid Yield”. International Journal of Agricultural and Biological Engineering 2 (1):51-57. https://ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/86.