The generation of a mathematical model of the biogas production process from organic municipal solid wasteMarzhan Temirbekova, Madina Aliyarova, Iliya Iliev, Aliya Yelemanova and Saule SagintayevaE3S Web Conf., 180 (2020) 02019DOI: https://doi.org/10.1051/e3sconf/202018002019