Buchardt, B., Christiansen, F., Nøhr-Hansen, H., Larsen, N. and Østfeldt, P. 1989. Chapter 5: Composition of organic matter in source rocks. Bulletin Grønlands Geologiske Undersøgelse. 158, (Jan. 1989), 32–39. DOI:https://doi.org/10.34194/bullggu.v158.6704.