• Changes in trace element contents in ashes of oil shale fueled PF and CFB boilers during operationReinik, Janek; Irha, Natalya; Steinnes, Eiliv; Urb, Gary; Jefimova, Jekaterina; Piirisalu, Eero; Loosaar, JüriFuel Processing Technology2013 / p. 174 - 181 https://doi.org/10.1016/j.fuproc.2013.06.001 https://www.scopus.com/sourceid/16315 https://www.scopus.com/record/display.uri?eid=2-s2.0-84879472744&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.1016%2Fj.fuproc.2013.06.001%29&sessionSearchId=603e590d3e42fd7816bb5e603603c2fd&relpos=0 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=FUEL%20PROCESS%20TECHNOL&year=2013 https://www.webofscience.com/wos/woscc/full-record/WOS:000324154600021
• Release of trace elements from oil shale fly ash of PF and CFB boilersReinik, Janek; Irha, Natalja; Jefimova, Jekaterina; Steinnes, EilivInternational Symposium "Oil shale 100 years" : Estonia, Sept. 20-23, 2016 : [abstracts]2016 / p. 25