1. Al-Bahry S, Mahmoud I, Al-Rawahi S, Paulson J. 2011. Egg contamination as an indicator of environmental health. In: Impact of Egg Contamination on Environmental Health. Nova Science Publisher, Inc. New York, USA. ISBN: 978-1-62100-125-6.
2. Al-Musharafi SK, Mahmoud IY, Al-Bahry SN. 2012. Heavy metal contamination from treated sewage effluents. 11th International Conf. on Modelling, Monitoring and Management of Water Pollution. New Forest, UK. www.witpress.com, ISSN 1743-3541 (on-line). WIT Transactions on Ecology and The Environment, Vol. 164, ©2012 WIT Press. UK. Page 381-389.
3. Han FX, Banin A, Kingery WL, Triplett GB, Zhou LX, Zheng SJ, Ding WX. New approach to studies of heavy metal redistribution in soil. Advances in Environmental Research. 8, pp113-120. 2003.
4. He ZL, Yang XE, Stoffella PJ. Trace elements in agroecosystems and impacts on the environment. J Trace Elem Med Bio 2005;19:125-140.
5. Mantovi P, Marmiroli M, Maestri E, Tagliavini S, Piccinini S, Marmiroli N. Application of a horizontal subsurface flow constructed wetland on treatment of dairy parlour wastewater. Bioresource Technol. 2003;88:85-94.