D.J. Jenkins, T.M. Wolever, R.H. Taylor, H. Barker, H. Fielden, J.M. Baldwin, A.C. Bowling, H.C. Newman, A.L. Jenkins and D.V. Goff, Glycemic index of foods: a physiological basis for carbohydrate exchange, American Journal of Clinical Nutrition, Vol. 34, 362–366.