SPIN REORIENTATION PHENOMENA IN SUBSTITUTED Pr2 (Co, Fe)17 INTERMETALLICS H. Y. Chen, B. M. Ma, S. G. Sankar and W. E. Wallace J. Phys. Colloques, 49 C8 (1988) C8-507-C8-508 DOI: 10.1051/jphyscol:19888229