1. K. K. Hatzios,Adv. in Agronomy, 36 /1984/ 265.
2. F. Dutka, T. Kőmives, Presticide Science and Biotechnology, R. Greenhalgh, T. R. Roberts /Eds./ Blackwell Scientific Publications, Oxford, 1987, p. 201.
3. A. Murray, III., D. L. Williams, Organic Synthesis with Isotopes, Intersci. Publ. Inc., New York, 1958, p. 34.
4. K. H. Schweer, A. Schwarz,Chem. Ber., 95 /1962/ 620.
5. W. G. Dauben, C. W. Vaughan,J. Am. Chem. Soc., 75 /1953/ 4651.