Boocock, T. J., Mikhail, S., Prytulak, J., Di Rocco, T., & Stüeken, E. E. (2020). Nitrogen Mass Fraction and Stable Isotope Ratios for Fourteen Geological Reference Materials: Evaluating the Applicability of Elemental Analyser Versus Sealed Tube Combustion Methods. Geostandards and Geoanalytical Research, 44(3), 537-551. https://doi.org/10.1111/ggr.12345