Improvements of Ebullated-Bed Technology for Upgrading Heavy OilsS. Kressmann, C. Boyer, J. J. Colyar, J. M. Schweitzer et J. C. ViguieOil & Gas Science and Technology - Rev. IFP, 55 4 (2000) 397-406DOI: https://doi.org/10.2516/ogst:2000028