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*Alonso, S., Esteban-Hernández, J., Rivera, Y., Hernández-Barrera, V., & de Miguel, Á. (2010). Contaminación del agua en fuentes cercanas a campos petrolíferos de Bolivia. Revista Panamericana DeSalud Pública, 28(4), 235-243.

*Karadavut, I., Saydam, A., Kalıpcı, E., Karadavut, S., Ozdemir, C., & Durduran, S. (2012). Pollution in Melendiz Water Basin Groundwater. Polish Journal OfEnvironmental Studies, 21(3), 659-666.

*Puga, S., Sosa, M., Lebgue, T., Quintana, C., & Campos, A. (2006). CONTAMINACIÓN POR METALES PESADOS EN SUELO PROVOCADA POR LA INDUSTRIA MINERA. (Spanish).Ecologia Aplicada, 5(1/2), 149-155.

*de Armas, T., & Castro, D. (2007). IMPACTO DE LA CONTAMINACIÓN AMBIENTAL SOBRE LOS CULTIVOS: METALES PESADOS. (Spanish). Ciencia Y Tecnologia De Los Alimentos,17(1), 75-80.

*Landeros-Sánchez, C., Lango-Reynoso, F., del Refugio Castañeda-Chávez, M., Galaviz-Villa, I., Nikolskii-Gavrilov, I., Palomarez-García, M., & ... Magaly Mínguez-Rodriguez, M. (2012).Assessment of Water Pollution in Different Aquatic Systems: Aquifers, Aquatic Farms on the Jamapa River, and Coastal Lagoons of Mexico. Journal Of Agricultural Science (1916-9752), 4(7), 186-196.doi:10.5539/jas.v4n7p186

*Hongbin, C., Haiyan, Z., Yijing, J., Jianjiang, C., Hui, Z., & Li, Q. (2011). Heavy Metals in Food Crops and the Associated Potential for Combined Health Risk due toInteractions between Metals. Human & Ecological Risk Assessment, 17(3), 700-711. doi:10.1080/10807039.2011.571117

*Roberts, A. S. (2011). Technology: New Ways for Clean Water. Technology &Engineering Teacher, 71(4), 4-9.

*Kulbat, E. E., Olanczuk, K. K., Quant, B. B., Geneja, M. M., & Haustein, E. E. (2003). Heavy Metals Removal in the Mechanical-Biological Wastewater Treatment Plant"Wschód" in Gdañsk. Polish Journal Of Environmental Studies, 12(5), 635-641.

*Gu, R. R., Sahu, M., & Xianggui, Z. (2010). Water and Soil Environment Pollution Reduction by Filter Strips. World...