Multicriteria Decision Support System for Selecting the Structural and Functional Scheme of a Biogas Plant in the Agro-Industrial ComplexValery Lubentsov, Ekaterina Ozhogova, Elena Lubentsova and Evgeniy ShakhrayE3S Web Conf., 285 (2021) 04010DOI: https://doi.org/10.1051/e3sconf/202128504010