1. 1. J. A. H. Murray, H. Bradley, W. A. Craigie, and C. T. Onions, 1961 . Oxford English Dictionary 9 : 118 . Oxford University Press. London.
2. 2. R. W. Burchfield, 1982 . Supplement to the Oxford English Dictionary. 3 : 1494 . Oxford University Press. London.
3. THE PHYSIOLOGY OF APPETITE
4. Peptides and the control of meal size