Ragasa, Consolacion Y., et al. “Sterols and Other Metabolites from Freshwater Microalga Chlorococcum Infusionum (Schrank) Meneghini”. Asian Journal of Chemistry, vol. 32, no. 7, June 2020, pp. 1614-6, https://asianpubs.org/index.php/ajchem/article/view/2383.