Llandovery carbon isotope trend in Estonia - local versus global signatures and correlationMartma, Tõnu; Hints, Olle; Kaljo, DimitriJoint European Stable Isotope Users group Meeting : JESIUM 2016 : 4-9 September 2016, Ghent University, Gent, Belgium : conference programme & book of abstracts2016 / p. 206 http://www.jesium2016.eu/assets/bookabstracts_jesium2016_3108.pdf