1. method 970.52;AOAC,1995
2. method 983.21;AOAC,1995
3. method 984.21;AOAC,1995
4. method S 8;Becker G.,1987
5. Becker, G. 1992.Organohalogen, organophosphorus and triazine compounds, method S 8 (updated). Manual of Pesticide Residue Analysis, Edited by: Deutsche Forschungsgemeinschaft. Volume 2, 313–316. Weinheim: VCH.