Ting, Han, et al. “Progress in Microalgae Cultivation Photobioreactors and Applications in Wastewater Treatment: A Review”. International Journal of Agricultural and Biological Engineering, vol. 10, no. 1, Jan. 2017, pp. 1-29, https://ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/2705.