Citation: Okonska-Kozlowska, I.; Maciazek, E.; Ratuszna, A. (2001). Crystal structure of Cu Cr2 Se4, Cu0.8 Co0.2 Cr2 Se4 and Cu0.4 Co0.6 Cr2 Se4. Applied Crystallography: Proceedings of the XVII International Conference Wisla, Poland 31 August-4 September, 1997, 18, pp. 54-57.