Reactive Rayleigh-Taylor systems: Front propagation and non-stationarity L. Biferale, F. Mantovani, M. Sbragaglia, A. Scagliarini, F. Toschi and R. Tripiccione EPL, 94 5 (2011) 54004 Published online: 27 May 2011 DOI: 10.1209/0295-5075/94/54004