1. Alais, C., Humbert, G. & Chuon, S. E. (1978) Annates de Technologie.agricole
27, 739.
2. Burton, H. (1958) Journal of Dairy Research
25, 75.
3. Burton, H., Perkin, A. G., Davies, F. L. & Underwood, H. M. (1977).Journal of Food Technology
12, 149.
4. Circular (1972) Circular FSH A 111 (England and Wales). Ministry of Agriculture, Fisheries and Food. London:HMSO.
5. Hallstròm, B. (1966) Proceedings 17th International Dairy Congress, Munich, Vol. B, p. 601.