F. Vallejo, L. Díaz-Robles, R. Vega, F. Cubillos, A.P. Espinoza, F. Pinilla, E. Pino-Cortés, An Experimental Study of Municipal Organic Waste and Sludge Treated by Hydrothermal Carbonization, Chemical Engineering Transactions. 81 (2020) 355-360. doi:10.3303/CET2081060.