1. Act No. 220/2004 (2004) On the protection and use of agricultural land. National Council of Slovak Republic, Bratislava. http://www.lecol.sk/images/stories/lecol/220_2004.pdf . Accessed 17 March 2015 [in Slovak]
2. Act No 188/2003 Coll. On application of sewage sludge and bottom sediment into the soil and amending and supplementing Act No 223/2001 Coll. On waste and amending and supplementing certain acts. http://www.mpsr.sk/index.php?navID=47&id=1736 . Accessed 8 Jan 2016 [in Slovak]
3. Akoumianakis KA, Passam HC, Barouchas PE, Moustakas NK (2009) Effect of cadmium on yield and cadmium concentration in the edible tissues of endive (Cichorium endivia L.) and rocket (Erucasativa Mill.). J Food Agric Environ 6:206–209
4. Angelovicova L, Fazekasova D (2014) Contamination of the soil and water environment by heavy metals in the former mining area of Rudnany (Slovakia). Soil Water Res 9:18–24
5. Arvay J, Bajcan D, Tomas J (2012) The quality of environmental components in the Stiavnica River alluvium. SUA in Nitra. (in Slovak)