Zhang, Y., Chi, H., Zhang, W., Sun, Y., Liang, Q., Gu, Y. and Jing, R. 2014. Highly Efficient Adsorption of Copper Ions by a PVP-Reduced Graphene Oxide Based On a New Adsorptions Mechanism. Nano-Micro Letters. 6, 1 (Jan. 2014), 80-87. DOI:https://doi.org/10.1007/BF03353772.