The use of Scots pine waste biomass for heating purposes Maciej Neugebauer, Aldona Skotnicka-Siepsiak, Janusz Piechocki, Krzysztof Nalepa and Piotr Sołowiej E3S Web Conf., 154 (2020) 01006 Published online: 09 March 2020 DOI: 10.1051/e3sconf/202015401006