Dwi Yuwono, Suripto, Sonny Widiarto, Sutopo Hadi, and Takao Kokugan. 2014. “Improvement of Lactic Acid Production from Cassava by Streptococcus Bovis Using Two-Stages Membrane Bioreactor”. Asian Journal of Chemistry 26 (18):6249-52. https://doi.org/10.14233/ajchem.2014.17402.