1. Air Pollution Chemistry;Butler,1979
2. Air Pollution Part 1;Ledbetter,1972
3. Global Warming: Basis for Concern;Carson;RSA Journal,1966
4. Pollutant formation and control in spark-ignition engines;Heywood;Prog. in Energy and Comb. Sc.,1976
5. Combustion process fundamentals and combustion chamber design for low emissions;Newhall,1975