• Toom, UrsulaGeoloogia Instituut, peavarahoidjaTalTechis: 1995-https://orcid.org/0000-0002-7782-6615 https://www.webofscience.com/wos/author/rid/B-7402-2019 https://scholar.google.com.ec/citations?user=A2IhDIYAAAAJ&hl=ja