Guest-host coupling and anharmonicity in clathrate hydrates H. Schober, H. Itoh, A. Klapproth, V. Chihaia and W. F. Kuhs Eur. Phys. J. E, 12 1 (2003) 41-49 Published online: 30 October 2003 DOI: 10.1140/epje/i2003-10026-6