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2. Wear preventive characteristics of lubricating grease (four-ball method), ASTM Method D 2266-67, ASTM Standards Book, Part 17 — Petroleum Products.
3. Measurement of extreme-pressure properties of lubricating grease (four-ball method), ASTM Method D 2596-67T, ASTM Standards Book, Part 17 —Petroleum Products.
4. The influence of chemical structure on the load-carrying properties of certain organo-sulfur compounds;Allum;J. Inst. Pet., London,1965
5. The load-carrying properties of organic sulfur compounds — II — The influence of chemical structure on the anti-wear properties of organic disulfides;Allum;J. Inst. Pet, London,1967