Activation of oil shale ashes for sulfur captureTrass, Olev; Kuusik, Rein, keemik; Kaljuvee, TiitOil shale2018 / p. 375-385 : ill https://doi.org/10.3176/oil.2018.4.07 http://www.kirj.ee/public/oilshale_pdf/2018/issue_4/OS-2018-4-375-385.pdf Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS