Phason softening in the AlPdMn icosahedral phase M. Boudard, M. de Boissieu, A. Letoublon, B. Hennion, R. Bellissent and C. Janot Europhys. Lett., 33 3 (1996) 199-204 Published online: 01 September 2002 DOI: 10.1209/epl/i1996-00321-x