1. Townend and Mandlekar, Proc. Roy. Soc., A, 141, 484 ( 1933).
2. See Newitt and Townend, "The Science of Petroleum", 4, 2884, 2958 ( 1938).
3. Chamberlain and Walsh, Symposium on Oxidation, Paris ( April 1948). Symposium on Combustion, Madison ( September 1948).
4. Townend, Chem. Rev., 21, 259 ( 1937).
5. Egerton, Smith and Ubbelohde, Phil. Trans. Roy. Soc., A, 234, 433 ( 1935).