H. Yokota, “Arsenic Pollutions of Groundwater in the World and Arsenic Removal Unit Installed in Bangladesh,” Keynote Lecture, Vietnam-Japan Joint Seminar on Geotechnics and Geoenvironment Engineering, Hanoi, November 2004, pp. 226-242.
 D. Chakraborty, G. Samanta, et al., “Arsenic in Ground Water in Six districts of West Bengal, India: biggest arsenic calamity in the world,” Environmental Geochemistry and Health, Vol. 18, 1996, pp. 5-15.
 D. Chakraborti, M. K. Sengupta, M. M. Rahman, S. Ahamed, U. K. Chowdhury, M. A. Hossain, et al., “Groundwater Arsenic Contamination and Its Health Effects in the Ganga-Meghna-Brahmaputra Plain,” Journal of Environmental Monitoring, Vol. 6, 2004, pp. 75N-83N.
 K. H. Cho, S. Sthiannopkao, Y. A. Pachepsky, K.-W. Kim and J. H. Kim, “Prediction of Contamination Potential of Groundwater Arsenic in Cambodia, Laos, and Thailand Using Artificial Neural Network,” Water Research, Vol. 45, No. 17, 2011, pp. 5535-5544. doi:10.1016/j.watres.2011.08.010
 H. Yokota, et al., “Collaboration between NGO and University of Miyazaki and Asian Arsenic Network for the Mitigation of Arsenic Contamination in Ganges Basin,” Proceedings of 1st International Symposium on Health Hazards of Arsenic Contamination of Groundwater and its Countermeasures, Keynote Lecture, 2006, pp. 47-58.
 S. Ahamed, M. Kumar Sengupta, B. Das, B. Nayak, A. Pal, A. Mukherjee, M. Amir Hossain and D. Chakraborti, “Arsenic Groundwater Contamination and Its Health Effects in the State of Uttar Pradesh (UP) in Upper and Middle Ganga Plain, India: A Severe Danger,” Science of the Total Environment, Vol. 370, No. 2-3, 2006, pp. 310- 322. doi:10.1016/j.scitotenv.2006.06.015
 A. K. Srivastava and R. M. Tripathi, “Arsenic in Ground Water in Uttar Pradesh: Testing and Mitigation Activities,” Proceedings of 1st International Symposium on Health Hazards of Arsenic Contamination of Groundwater and its Countermeasures, 2006, pp. 77-82.
 Y. Yano, A. Kodama, K. Shiomori, M. Sezaki, K. Tanabe, R. Jaiswal, P. Jaiswal, Tripathi and H. Yokota, “Arsenic Contamination of Groundwater at Uttar Pradesh State in India,” International Symposium on Geo-disaster Prevention and Geo-environment in Asia, JS-Fukuoka, The Japanese Geotechnical Society, 2009, pp. 193-198.
 M. Pueyo, J. Sastre, E. Hernandez, M. Vidal, J. F. Lopez- Sanchez and G. Rauret, “Predection of Trace Element Mobility in Contaminated Soils by Sequential Extraction,” Journal of Environmental Quality, Vol. 32, No. 6, 2003, pp. 2054-2066. doi:10.2134/jeq2003.2054
 National Environmental Engineering Research Institute, Nagpur, “Assessment of Generation, Treatment, Disposal and Selection of Disposal Sites for Hazardous Wastes in Kanpur,” Uttar Pradesh Pollution Control Board, Luck- now, 1996, pp. 102-112.
 J. Akai, K. Izumi, H. Fukuhara, H. Masuda, S. Nakano, T. Yoshimura, H. Ohfuji, Md. Anawar Hossain and K. Akai, “Mineralogical and Geomicrobiological Investigations on Groundwater Arsenic Enrichment in Bangladesh,” Applied Geochemistry, Vol. 19, No. 2, 2004, pp. 215-230. doi:10.1016/j.apgeochem.2003.09.008