Paraffinic oil residues after heating as a basis for fuel Elvira Zvereva, Anastasiya Makarova, Nikolay Ilyin, Marina Ageeva, Alexander Turanov and Olga Zueva E3S Web Conf., 376 (2023) 04020 Published online: 31 March 2023 DOI: 10.1051/e3sconf/202337604020