H. T. M. Saragih, J. H. Sembiring, and E. . Ginting, “CONVERSION OF PINEAPPLE PEEL GLUCOSE INTO BIOETHANOL USING SIMULTANEOUS SACCHARIFICATION AND FERMENTATION (SSF) METHOD AND SEPARATE HYDROLYSIS AND FERMENTATION (SHF) METHOD ”, J. kim. ris , vol. 8, no. 2, pp. 167–174, Dec. 2023.