• Environmental impact of oil shale miningVäizene, Vivika; Valgma, Ingo; Karu, Veiko; Orru, MallEnvironmental earth sciences2016 / art. 1201, p. 1-14 : ill https://doi.org/10.1007/s12665-016-5996-4 https://www.scopus.com/sourceid/19400158519 https://www.scopus.com/record/display.uri?eid=2-s2.0-84983661892&origin=inward&txGid=bc4ef3fff71f8fde33571809593a4455 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=ENVIRON%20EARTH%20SCI&year=2016 https://www.webofscience.com/wos/woscc/full-record/WOS:000381986800049
• Possibilities of oil shale mining under the Selisoo mire of the Estonia oil shale depositOrru, Mall; Väizene, Vivika; Pastarus, Jüri-Rivaldo; Sõstra, Ülo; Valgma, IngoEnvironmental earth sciences2013 / p. 3311-3321 : ill https://doi.org/10.1007/s12665-013-2396-x https://www.scopus.com/sourceid/19400158519 https://www.scopus.com/record/display.uri?eid=2-s2.0-84888072640&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.1007%2Fs12665-013-2396-x%29&sessionSearchId=fa9a5fc3687a75a1302f00c2c5595963 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=ENVIRON%20EARTH%20SCI&year=2013 https://www.webofscience.com/wos/woscc/full-record/WOS:000326928600034