1. Intertanko. Revisions of MARPOL Annex VI, the NOx Technical Code and Relevant Guidelines; International Maritime Organization: London, U.K., 2006.
2. International Petroleum Industry Environmental Conservation Association and Oil Companies International Maritime Forum. Environmental Impact of SOx Emissions from International Shipping and Considerations on the Supply of Low Sulphur Bunker Fuels; International Maritime Organization: London, U.K., 2006.
3. Wang, M.Q. Development and Use of GREET 1.6 Fuel-Cycle Model for Transportation Fuels and Vehicle Technologies; ANL/ESD/TM-163; Center for Transportation Research at Argonne National Laboratory: Argonne, IL, 2001.
4. Wang, M.Q.; Huang, H.S. A Full Fuel-Cycle Analysis of Energy and Emissions Impacts of Transportation Fuels Produced from Natural Gas; ANL/ESD-40; Argonne National Lab: Argonne, IL, 1999.
5. Reciprocating Internal Combustion Engines-Exhaust Emission Measurement-Part 4: Test Cycles for Different Engine Applications; ISO 8178-4: 1996(E); International Organization for Standardization: Geneva, Switzerland, 1996.