Entropic effects in diffusion-adsorption processes in micropores I. Santamaría-Holek, Z.J. Grzywna and J.M. Rubi Eur. Phys. J. Special Topics, 222 1 (2013) 129-141 Published online: 17 June 2013 DOI: 10.1140/epjst/e2013-01831-2