Võ , Hồng Trung, et al. “EFFECT OF NITROGEN (NITRATE) ON GROWTH, PROTEIN CONTENT, AND ANTIOXIDANT CAPACITY OF THE SPIRULINA SP”. HCMUE Journal of Science, vol. 16, no. 12, Dec. 2019, p. 1018, doi:10.54607/hcmue.js.16.12.2568(2019).