Jelena, K. , Ivana, O. , Vesna, K. , Ilija, K. , Sne┼żana, A. (2014). 'The Statistical Significant of Adsorbents for Effective Zn (II) Ions Removal'. World Academy of Science, Engineering and Technology, Open Science Index 91, International Journal of Environmental and Ecological Engineering, 8(7), 486 - 488.