D. Sanchez-Forero, K. Klock Da Costa, R. Amaral, O. Taranto, M. Mori, Influence of Liquid Viscosity and Solid Load in a Three-Phase Bubble Column using Stereoscopic Particle Image Velocimetry (Stereo-PIV), Chemical Engineering Transactions. 43 (2015) 1579-1584. doi:10.3303/CET1543264.