Wasielewski, Ryszard, and Krzysztof Głód. 2020. “Emission Results of Combustion Process of Fatty Acids Distillation Residue in an Oil Boiler – Comparison to Heavy Fuel Oil”. Scientific Review Engineering and Environmental Sciences (SREES) 29 (1):62-71. https://doi.org/10.22630/PNIKS.2020.29.1.6.