Magnetoelastic contribution to the elastic constants of terbium, dysprosium and erbium M.S. Torikachvili, S. Gama, B.M. Kale, D.G. Pinatti and P.L. Donoho J. Phys. Colloques, 40 C5 (1979) C5-30-C5-32 DOI: 10.1051/jphyscol:1979511