• The enrichment behavior of natural radionuclides in pulverized oil shale-fired power plantsVaasma, Taavi; Kiisk, Madis; Meriste, Tõnis; Tkaczyk, Alan HenryJournal of environmental radioactivity2014 / p. 427-433 : ill https://doi.org/10.1016/j.jenvrad.2014.02.027 https://www.scopus.com/sourceid/23388 https://www.scopus.com/record/display.uri?eid=2-s2.0-84919698940&origin=inward&txGid=6c00f446799425576cbbbc5007f94dde https://jcr.clarivate.com/jcr-jp/journal-profile?journal=J%20ENVIRON%20RADIOACTIV&year=2014 https://www.webofscience.com/wos/woscc/full-record/WOS:000346215100052