SKALICKÁ, Magdaléna et al. Changes cadmium and copper levels after administration of sodium humate in the tissues of broiler. In Risk Factors of Food Chain. XVIth Risk Factors of Food Chain 2015, October 19-21th 2015, Dudince, Slovak Republic : Book of Abstracts. 1. vyd. - Nitra : SPU, 2015. ISBN 978-80-552-1424-5, online, S. 35. Available on Internet: <http://www.slpk.sk/eldo/2015/dl/9788055214245/9788055214245.pdf>