Zukhri, M. F. ., Hamzah, A. . and Anam, M. K. . (2025) “Optimization of Bioethanol Production From Chlorella Vulgaris With Ca2+,Mg2+, and Zn2+ Ion Suplements Through Separated Hydrolysis and Fermentation Using Respon Surface Methodology”, IPTEK The Journal of Engineering, 11(1), pp. 70–80. Available at: https://journal.its.ac.id/index.php/joe/article/view/8273 (Accessed: 28 January 2026).