Fuzzy rule-based classification of complex biogas energy projectsAlexander V. Lomazov, Vadim A. Lonazov, Dmitriy N. Klyosov, Irina V. Miroshnichenko and Nikolay P. ZuevE3S Web of Conf., 510 (2024) 04006DOI: https://doi.org/10.1051/e3sconf/202451004006