Low-frequency structural dynamics in the incommensurate composite crystal J. Etrillard, L. Bourgeois, P. Bourges, B. Liang, C. T. Lin and B. Keimer Europhys. Lett., 66 2 (2004) 246-252 Published online: 01 April 2004 DOI: 10.1209/epl/i2003-10182-3