Slow and intermittent stress relaxation of biomass granular media Florent Thevenon, Bharath Devulapalli, Muriel Marchand, Thierry Melkior and Alain de Ryck EPJ Web Conf., 249 (2021) 08010 Published online: 07 June 2021 DOI: 10.1051/epjconf/202124908010