Duca, Daniele, Giovanni Riva, Ester Foppa Pedretti, Giuseppe Toscano, Chiara Mengarelli, and Giorgio Rossini. 2014. “Solid Biofuels Production from Agricultural Residues and Processing by-Products by Means of Torrefaction Treatment: The Case of Sunflower Chain”. Journal of Agricultural Engineering 45 (3):97-102. https://doi.org/10.4081/jae.2014.416.