INCOMMENSURATE AND LOCK-IN MAGNETIC PHASE TRANSITIONS IN TbSi P. Schobinger-Papamantellos, K. H. J. Buschow, F. Maaroufi and P. Tolédano J. Phys. Colloques, 49 C8 (1988) C8-423-C8-424 DOI: 10.1051/jphyscol:19888193