Citation: Drzazga, Z.; Chelkowski, A.; Krok, J.; Broda, H.; Kubiak, S.; Mydlarz, T. (1980). Crystal structure and magnetic properties of intermetallic compounds Ho Co5.5-x Mx, M= Mn, Fe, Ni, Cu. Journal of Magnetism and Magnetic Materials, 15, pp. 1241-1242.