1. The state of soil in Europe, JCR Reference reports 〈http://eusoils.jrc.ec.europa.eu/ESDB_Archive/eusoils_docs/other/EUR25186.pdf〉 (Accessed 26 January 2018), 2012.
2. The role of copper, zinc and other chemical elements in ischemic heart disease;Klevay,1984
3. Role of zinc in plant nutrition – a review;Hafeez;Am. J. Exp. Agric.,2013
4. Interactions between Zn and other nutrients affecting the growth of plants;Loneragan,1993
5. Micronutrient availability to cereals from calcareous soils. I. Comparative Zn and Cu deficiency and their mutual interaction in rice and wheat;Kausar;Plant Soil,1976