• Assessing the geochemical variability of oil shale in the Attarat Um Ghudran deposit, JordanVoolma, Margus; Soesoo, Alvar; Puura, Väino; Hade, Sigrid; Aosaar, HardiEstonian journal of earth sciences2016 / p. 61-74 : ill https://doi.org/10.3176/earth.2016.06 https://artiklid.elnet.ee/record=b2778896*est https://www.scopus.com/sourceid/6000195392 https://www.scopus.com/record/display.uri?eid=2-s2.0-84969927142&origin=inward&txGid=1390e043fa6004d53c40bb93e8a20196 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=EST%20J%20EARTH%20SCI&year=2016 https://www.webofscience.com/wos/woscc/full-record/WOS:000376670200001