Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Katsutada Onitsuk and Shigenori Hayashi and Jinchun Chai,Cr(VI) concentration from batch contact/tank leaching and column percolation test using fly ash with additives,Journal of Hazardous Materials,0304-3894,Elsevier BV,2009-07-01,166,,67-73,https://cir.nii.ac.jp/crid/1873961342617005824,https://doi.org/10.1016/j.jhazmat.2008.11.010