1. Colyar, J.J. and Wisdom, L.I. (1992)Upgrading Vacuum Residue from Mexican Crudes for Petroleos Mexicanos Hydrodesulfurization Residue Complex Miguel Hidalgo Refinery, Japan Petroleum Institute, Tokyo, Japan.
2. Colyar, J.J. and Wisdom, L.I. (1994) Second Generation Ebullated-Bed Technology.Proc. of JPI Petroleum Refining Conference, Tokyo, Japan.
3. Colyar, J.J. and Wisdom, L.I. (1997) The H-Oil Process: A Worldwide Leader in Vacuum Residue Processing.Proc. of 1997 National Petroleum Refiners Association Annual Meeting, San Antonio, TX.
4. Cooper, D.W. (1982)Gas-Particle Separation, Handbook of Multiphase Systems, Gad Hetsroni eds.