• Radionuclide concentration variations in residues from potential NORM industries in Estonia : the example of oil shale-fired power plantsVaasma, Taavi; Kiisk, Madis; Realo, Enn; Loosaar, Jüri; Tkaczyk, Alan HenryV. Terrestrial Radioisotopes in Environment : International Conference on Environmental Protection2016 / p. 30 http://dx.doi.org/10.18428/TREICEP-2016
• Radionuclide concentration variations in the fuel and residues of oil shale-fired power plants : estimations of the radiological characteristics over a 2-year periodVaasma, Taavi; Loosaar, Jüri; Kiisk, Madis; Tkaczyk, Alan HenryJournal of environmental radioactivity2017 / p. 25-33 : ill https://doi.org/10.1016/j.jenvrad.2016.10.005 https://www.scopus.com/sourceid/23388 https://www.scopus.com/record/display.uri?eid=2-s2.0-85008643891&origin=inward&txGid=e218784e23432db2ea2464631b01e21a https://jcr.clarivate.com/jcr-jp/journal-profile?journal=J%20ENVIRON%20RADIOACTIV&year=2017 https://www.webofscience.com/wos/woscc/full-record/WOS:000401675800006
• 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
• The enrichment of natural radionuclides in oil shale-fired power plants in Estonia - The impact of new circulating fluidized bed technologyVaasma, Taavi; Kiisk, Madis; Meriste, Tõnis; Tkaczyk, Alan HenryJournal of environmental radioactivity2014 / p. 133-139 : ill https://doi.org/10.1016/j.jenvrad.2014.01.002 https://www.scopus.com/sourceid/23388 https://www.scopus.com/record/display.uri?eid=2-s2.0-84892845114&origin=inward&txGid=5f0104f0e5eecc61bf49b351e211c0d7 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=J%20ENVIRON%20RADIOACTIV&year=2014 https://www.webofscience.com/wos/woscc/full-record/WOS:000334484300018