Polydispersity effects in the dynamics and stability of bubbling flows E. Salinas-Rodríguez, R. F. Rodríguez, J. M. Zamora and A. Soria Eur. Phys. J. B, 50 1-2 (2006) 111-115 Published online: 12 April 2006 DOI: 10.1140/epjb/e2006-00128-7