1. Organic FAQs
2. Use of organic land in the European Union and organic wheat production in the European Union, 31.12.2004; data not consolidated. FiBL survey 2006. Update of 17.5.2006. [Online]. The Organic Europe Homepage, Research Institute of Organic Agriculture FiBL, Frick, Switzerland. Available: http://www.organic-europe.net/europe_eu/statistics-eu-landuse-2004.htm [14 June 2006].
3. Council Regulation (EEC) No. 2092/91 of 24 June 1991. [Online]. Available: http://europa.eu.int/eur-lex/en/consleg/pdf/1991/en_1991R2092_do_001.pdf [27 May 2006].
4. Urban myths of organic farming
5. , , Organisch und konventionell erzeugte Lebensmittel im Vergleich—Eine Literaturstudie. Teil I und II. Bundesinstitut für gesundheitlichen Verbraucherschutz und Veterinärmedizin, Berlin, Hefte 4, 5, pp. 16–58, 381–391, 492–520 (1995).