Pal, S., H. B. Singh, and A. Rakshit. “Potential of Different Crop Species for Nickel and Cadmium Phytoremediation in Peri-Urban Areas of Varanasi District (India) With More Than Twenty Years of Wastewater Irrigation History”. Italian Journal of Agronomy, Vol. 8, no. 1, Mar. 2013, p. e8, doi:10.4081/ija.2013.e8.