Citation: Bongers, P.F.; van Bruggen, C.F.; Koopstra, J.; Omloo, W.P.F.A.M.; Wiegers, G.A.; Jellinek, F. (1968). Structures and magnetic properties of some metal(I) chromium(III) sulfides and selenides. Journal of Physics and Chemistry of Solids, 29, pp. 977-984.