• Examination of molecular weight distributions of primary pyrolysis oils from three different oil shales via direct pyrolysis Field Ionization SpectrometryOja, VahurFuel2015 / p. 759-765 : ill https://doi.org/10.1016/j.fuel.2015.07.041 https://www.scopus.com/sourceid/16313 https://www.scopus.com/record/display.uri?eid=2-s2.0-84937935627&origin=inward&txGid=4f56e045cf4181344227f5fb3065c677 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=FUEL&year=2015 https://www.webofscience.com/wos/woscc/full-record/WOS:000360006100083