CHRISNASARI, R., D. H. SUSETYO, A. P. SUGIANTO, and T. PANTJAJANI. “Optimization Modeling of Ethanol Production from Shorgum Bicolor Grain: Comparison Between Separate Hydrolysis Fermentation and Simultaneous Saccharification Fermentation”. Microbiology Indonesia, vol. 7, no. 1, May 2013, p. 2, doi:10.5454/mi.7.1.2.