Chaoyu, Tian, et al. “Enhanced Microalgae Cultivation Using Digested Kitchen Waste Sewage Treated With Struvite Precipitation”. International Journal of Agricultural and Biological Engineering, vol. 10, no. 1, Jan. 2017, pp. 142-7, https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/2318.