1. Hutzler MJ, Sitzer S, Holtberg PD, Conti J, Kendell JM, Kydes AS. Annual Energy Outlook 2003 with projection to 2025, The United States Energy Information Administration, January 2003, US Department of Energy, Washington, DC 205 85, 267 pp.
2. Bauquis PR. A reappraisal of energy supply and demand in 2050. The Institute of Energy Economics, Japan, July (http://eneken.ieej.or.jp/en/outlook/).
3. Elemental sulfur as an effective promoter for the catalytic hydrocracking of Arabian vacuum residue
4. Chemical structure changes in Cold Lake oil-sand bitumen and catalytic activities during catalytic hydrotreatment
5. Upgrading of coal-derived liquids