1. Balk, R.: Structural geology of the Adirondack anorthosite. Mineral. Petrog. Mitt. 41, 308–434 (1931)
2. Barrett, D.R.: The genesis of kimberlites and associated rocks: strontium isotopic evidence. In: Physics and chemistry of the earth, Vol. 9. pp. 637–653. London: Pergamon Press 1975
3. Barton, J.M., Jr.: A geochronologic and stratigraphic study of the Precambrian rocks north of Montreal. Unpub. Ph.D. Thesis, McGill Univ., Montreal, Canada, 117pp. (1971)
4. Barton, J.M., Jr.: Progress of isotopic and geochemical investigations, Coastal Labrador, 1973. In: The Nain Anorthosite Project, Labrador, Field Rept. 1973. Univ. Massachusetts Geol. Dept. Contrib. 13, 18–28 (1973)
5. Barton, J.M., Jr., Doig, R.: Rb-Sr isotopic studies of the Lac Croche complex, Grenville Province, Quebec. Can. J. Earth Sci. 9, 1180–1186 (1972)