An elasto-visco-plastic model for immortal foams or emulsions S. Bénito, C. -H. Bruneau, T. Colin, C. Gay and F. Molino Eur. Phys. J. E, 25 3 (2008) 225-251 Published online: 24 March 2008 DOI: 10.1140/epje/i2007-10284-2