Xuan, N. T., D. T. Trang, and L. T. Thu Hien. “Safety Assessment of Maize Grain Attained from Nano-Copper Treated Seeds on Chickens”. Vietnam Journal of Biotechnology, vol. 16, no. 3, Dec. 2018, pp. 509-15, doi:10.15625/1811-4989/16/3/13473.