1. Vos, J.G., Breeman, H.A. and Benschop, M., Mededelingen Rijksfaculeit Landbouwwetenschappen Gent 3, 1263 (1968).
2. Vos, J.G., van der Maas, H.L., Musch, A., and Ram, E., Toxicol. Appl. Pharmacol. 18, 994 (1971).
3. McCully, K.A., and McKinley, W.P., J.A.O.A.C. 47, 652 (1964).
4. Reynolds, L.M., Bull. Environ. Contam. Toxicol., 4, 128 (1969).
5. Reynolds, L.M., Residue Reviews 34, 27 (1971).