1. Motor Vehicle-Related Air Toxics Study;EPA,1993
2. Percentages of Total Imported Crude Oil by API Gravity;EIA,2006
3. The reactions involved in HDN;Perot;Catal. Today,1991
4. Gas Oil Deep HDS: refractory compounds retarded kinetic;Schulz;Catal. Today,1999
5. Deep HDS process for diesel oil;Takatsuka;Catal. Today,1997