1. M.V. Hunter, Quat. J. Pharm., 1944, 17, 302.
2. O.A. Beath, C.S. Gilbert, H.F. Eppson and I. Rosenfield, Wyo. Agric. Exp. Stn. Bull., No. 324, 1953.
3. L.J. Klebesadel, Agroborealis, 1972, April, 13–18.
4. G.R. Waller, Progr. Chem. Fats and Oils, Vol. IX, 1969, p. 91.
5. G.M. Frost, R.L. Hale, G.R. Waller, L.H. Zalkow and W.W. Girotra, Chem. & Ind., London, 1967, p. 320.