Citation: Drzazga, Z.; Mydlarz, T.; Chelkowski, A.; Kubiak, S.; Krok, J.; Broda, H. (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.