O. Jogunola, T. Salmi, J. Warna, S. Leveneur, J. Mikkola, Modelling of Simultaneous Reaction and Diffusion in Chemical Reactors with Particle Size Distributions: Application of Ion-exchange Resins in Heterogeneous Catalysis, Chemical Engineering Transactions. 24 (2011) 139-144. doi:10.3303/CET1124024.