O. Akoto, J. H. Ephraim and G. Darko, “Heavy Metal Pollution in Surface Soils in the Vicinity of Abundant Raiway Servicing Workshop in Kumasi, Ghana,” International Journal of Environmental Research, Vol. 2, No. 4, 2008, pp. 359-364.
 H. Ghrefat and N. Yusuf, “Assessing Mn, Fe, Cu, Zn and Cd Pollution in Bottom Sediments of Wadi Al-Arab Dam, Jordan,” Chemosphere, Vol. 65, No. 11, 2006, pp. 2114-2121. doi:10.1016/j.chemosphere.2006.06.043
 D. C. Thomilson, D. J. Wilson, C. R. Harris and D. W. Jeffrey, “Problem in Heavy Metals in Estuaries and the Formation of Pollution Index,” Helgol. Wiss. Meeresunlter, Vol. 33, No. 1-4, 1980, pp. 566-575.
 P. K. Saha and M. D. Hossain, “Geochemical and Ecotoxical Approach for Evaluation of Heavy Metal Pollution in the Buriganga River Sediment,” Proceedings of Bangladesh Geotechnical Conference, 2010.
 P. K. Saha and M. D. Hossain, “Assessment of Heavy Metal Contamination and Sediment Quality in the Buriganga River, Bangladesh,” 2nd International Conference on Environmental Science and Technology, IPCBEE, Singapore, 26-28 February 2011.