• 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 https://www.scopus.com/sourceid/17080 https://www.scopus.com/record/display.uri?eid=2-s2.0-85063232684&origin=inward&txGid=87b3ea56887920f04cd2d49dc9d2b1ec https://jcr.clarivate.com/jcr-jp/journal-profile?journal=OIL%20SHALE&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000450718100006