THERMAL EXPANSION AND MAGNETOSTRICTION IN HEXAGONAL PrNi5 AND TmNi5 SINGLE CRYSTALS V. M. T. S. Barthem, G. Creuzet, D. Gignoux et D. Schmitt J. Phys. Colloques, 49 C8 (1988) C8-527-C2-528 DOI: 10.1051/jphyscol:19888239