Ultrasonic Study of Magnetoelastic Effects in the Spin-Peierls State of CuGeO3 M. Saint-Paul, G. Reményi, N. Hegmann, P. Monceau, G. Dhalenne et A. Revcolevschi J. Phys. IV France, 06 C8 (1996) C8-539-C8-540 DOI: 10.1051/jp4:19968117