1. Baker, T.B. (1985), Quality by Experimental Design, Marcel Dekker, Inc., New York, NY.
2. Box, G.E.P., Hunter, W.G. and Hunter, S.J. (1978), Statistics for Experimenters, cop., pp. 295‐9.
3. Murray, D.W., MacDonald, J.M., White, A.M. and Wright, P.G. (1982), “The effect of basestock composition on lubricant oxidation performance”, Petroleum Review, February, pp. 36‐40.
4. Murray, D.W., MacDonald, J.M., White, A.M. and Wright, P.G. (1983), “A new concept of lubricant base oil quality”, 11th World Pet. Congr., Vol. 4, pp. 447‐57.
5. Ohkatzu, Y. (1995), “Functions of additives (2): antioxidants”, Japanese Journal of Tribology, Vol. 40 No. 4, pp. 299‐306.