1. Oil shale: a framework for development;Lewis,1980
2. Announced at the 24th Oil Shale Symposium, April 23–24, 1991.
3. Cold flow model testing of the HYTORT process retort design;Rex,1984
4. The hydroretorting assay—a new technique for oil shale assessment;Lynch,1984
5. Flash hydrotorting of Colorado shale;McMahon,1989