Methane fermentation as a possibility of utilization and energy – efficient management of sewage sludgeAnna Smurzyńska, Kamil Kozłowski, Marta Cieślik, Michał Brzoski, Dawid Chełkowski, Jakub Mazurkiewicz and Ewa WoźniakBIO Web Conf., 10 (2018) 01016DOI: https://doi.org/10.1051/bioconf/20181001016