F. Tramontin Silveira Schaffka, J. Jairo Ramirez Behainne, M. R. Parise, and G. J. Castilho, “Effect of the Solids Inventory and Fluidization Gas Velocity on the Hydrodynamics of a Circulating Fluidized Bed”, Chemical Engineering Transactions, vol. 74, pp. 1009-1014, May 2019.