Diffusion hysteresis in mesoporous materials S. Naumov, R. Valiullin, P. Galvosas, J. Kärger and P. A. Monson Eur. Phys. J. Special Topics, 141 (2007) 107-112 Published online: 29 March 2007 DOI: 10.1140/epjst/e2007-00025-y