Durand, E and Lobo, P and Crayford, A and Sevcenco, Y and Christie, S (2020) Impact of fuel hydrogen content on non-volatile particulate matter emitted from an aircraft auxiliary power unit measured with standardised ref- erence systems. Fuel. ISSN 0016-2361 Downloaded from: Version: Accepted Version Publisher: Elsevier DOI: https://doi.org/10.1016/j.fuel.2020.119637 Usage rights: Creative Commons: Attribution-Noncommercial-No Deriva- tive Works 4.0 Please cite the published version