Petruzzelli, G. , Pedron, F. , Rosellini, I. , Tassi, E. , Gorini, F. , Pezzarossa, B. , Barbafieri, M.. "Effect of Ionic Strength on Mercury Adsorption on Contaminated Soil". World Academy of Science, Engineering and Technology, Open Science Index 78, International Journal of Environmental and Ecological Engineering, (2013), 7(6), 345 - 348.