Stratulat, C., Ginghina, R., Bratu, A., Isleyen, A., Tunc, M., Hafner-Vuk, K., Frey, A., Kjeldsen, H. & Vogl, J. (2023.0) Development- and Validation-Improved Metrological Methods for the Determination of Inorganic Impurities and Ash Content from Biofuels. ENERGIES , 16.0(13.0), 14.0.