Enhancement of Biogas Production from Rice Husk by NaOH and Enzyme PretreatmentSyafrudin, Winardi Dwi Nugraha, Shandy Sarima Agnesia, Hashfi Hawali Abdul Matin and BudiyonoE3S Web Conf., 31 (2018) 02002DOI: https://doi.org/10.1051/e3sconf/20183102002