Viscosity effects in foam drainage: Newtonian and non-newtonian foaming fluids M. Safouane, A. Saint-Jalmes, V. Bergeron and D. Langevin Eur. Phys. J. E, 19 2 (2006) 195-202 Published online: 28 February 2006 DOI: 10.1140/epje/e2006-00025-4