1. T. K. Hanson and A. C. Egerton, Proc. Roy. Soc., A163, 90 (1937).
2. R. S. Spindt, C. L. Wolfe, and D. R. Stevens, SAE Paper #638, “Nitrogen Oxides, Combustion and Engine Deposits, ” (November 9 – 10, 1955 ).
3. ibid, SAE Transactions, 64, 797 (1956).
4. K. L. Kreuz, Lubrication, 55, 53 (1969).
5. B. D. Vineyard and A. Y. Coran, “Gasoline Engine Deposition: I Blow-by Collection and the Identification of Deposit Precursors,” ACS Meeting, Petroleum Division, New York (September 7 – 12, 1969 ).