“A Preliminary Examination of Fluid Inclusions in Nepheline, Sorensenite, Tugtupite and Chkalovite from the Ilímaussaq Alkaline Intrusion, South Greenland”. Bulletin Grønlands Geologiske Undersøgelse, vol. 81, Jan. 1970, pp. 1-41, https://doi.org/10.34194/bullggu.v81.6621.