1. Codex Alimentarius Commission, Report of the 28th session of the Codex Committee on Pesticide Residues, 15–20 April, 1996.
2. Límites máximos de residuos de productos fitosanitarios. Ministerio de Agricultura, Pesca y Alimentación, España, updated 03-05-2004, http://www.mapya.es.
3. Codex Alimentarius Commission, http://www.fao.org/
4. Food and Drug Administration of the United Status, http://wm.cfsan.fda.gov, 2003.
5. Application of ion-exchange cartridge clean-up in food analysis