1. Vogel, R., Tonn, W., “About the Ternary System Iron-Nickel-Sulfur” (in German), Arch. Eisenhuettenwes., 3(12), 769–780 (1930) (Experimental, Phase Relations, Magn. Prop., 5)
2. Urazov, G.G., Filin, N.A., “Investigation of Alloys of the Fe-Ni-S System” (in Russian), Metallurg, 2, 3–19 (1938) (Experimental, Morphology, Phase Diagram, Phase Relations, 21)
3. Hawley, J.E., Colgrove, G.L., Zurbrugg, H.F., “The Fe-Ni-S System. An Introduction with New Data on the Crystallization of Pyrrhotite and Pentlandite”, Econ. Geol., 38(5), 335–388 (1943) (Crys. Structure, Experimental, Phase Diagram, Phase Relations, Thermodyn., 73)
4. Lundqvist, D., “X-Ray Studies in the Ternary System Fe-Ni-S”, Arkiv Kemi, Mineral. Geol., 24A(22) 1–12 (1947) as quoted in [1973Mis2]
5. Jaenecke, E., “S-Fe-Ni” (in German) in “Kurzgefasstes Handbuch aller Legierungen”, Winter Verlag, Heidelberg, 721–722 (1949) (Phase Diagram, Phase Relations, Review, 1)