1. EUROSTAT (2013) Agricultural production—crops. http://epp.eurostat.ec.europa.eu/statistics_explained/index.php/Agricultural_production_-_crops . Accessed 17 April 14
2. Asadi M (2007) Beet-sugar handbook. A John Wiley & Sons Inc., Publication, Hoboken
3. Cooke DA, Scott RK (eds) (1993) The sugar beet crop: science into practice. Chapman & Hall, London
4. United Nations (2000) Report, annex C: exposures to the public from man-made sources of radiation. http://www.unscear.org/docs/reports/annexc.pdf . Accessed 15 Feb 14
5. Simon SL, Bouville A, Beck HL (2004) J Environ Radioact 74:91–105. doi: 10.1016/j.jenvrad.2004.01.023