Gravitational compression of colloidal gels J. J. Liétor-Santos, C. Kim, P. J. Lu, A. Fernández-Nieves and D. A. Weitz Eur. Phys. J. E, 28 2 (2009) 159-164 Published online: 18 November 2008 DOI: 10.1140/epje/i2008-10390-7