M. Esshaimi, N. Ouazzani, M. Avila, G. Perez, M. Valiente and L. Mandi, 2011, Heavy metal contamination of soils and water resources around some abandoned mines in the southern morocco. Proceedings of the 1st water and Environment international conference, WATEIC-2011, Marrakech, 26-29 October 2011. ISBN: 978-9981-916-34-0