1. A method of describing diesel engine performance maps;Jahns;ASAE paper 83-103,1983
2. Mathematical description of diesel engine performance;Jahns;ASAE paper 87-1026,1987
3. Internal Combustion Engines and air pollution;Obert,1973
4. Engine test code, spark ignition and diesel;SAE;Soc. of Automotive Engineers Standard J816b, found in 1979 SAE Handbook, Part 2,1979
5. Principles and Procedures of Statistics;Steele,1980