• Nitrogen isotopes in kukersite and black shale implying Ordovician-Silurian seawater redox conditionsKiipli, Enli; Kiipli, TarmoOil shale2013 / p. 60-75 : ill https://artiklid.elnet.ee/record=b2604253*est https://doi.org/10.3176/oil.2013.1.06 https://www.scopus.com/sourceid/17080 https://www.scopus.com/record/display.uri?eid=2-s2.0-84874364056&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.3176%2Foil.2013.1.06%29&sessionSearchId=a6a9a3b6ef7339347899f2ad4e915514&relpos=0 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=OIL%20SHALE&year=2013 https://www.webofscience.com/wos/woscc/full-record/WOS:000315576900006