Tuyet Nhung, Tran Thi, and Dai Nghiep Ngo. “Mutagenesis of Rhodosporidium Toruloides Using Ethyl Methanesulfonate for Enhancing Astaxanthin Production and Evaluation Scavenging Activity Against 2,2-Diphenyl-1-Picrylhydrazyl of Astaxanthin”. VNUHCM Journal of Natural Sciences 5, no. 4 (November 20, 2021): 1670-1678. Accessed October 4, 2025. http://stdjns.scienceandtechnology.com.vn/index.php/stdjns/article/view/1086.