• A bio- and chemostratigraphic search for the Mid-Ludfordian Carbon Isotope Excursion interval in the Ludlow of the Ohesaare core, EstoniaKaljo, Dimitri; Martma, Tõnu; Märss, Tiiu; Nestor, Viiu-Kai; Viira, ViiveEstonian journal of earth sciences2022 / p. 44-60 : ill https://doi.org/10.3176/earth.2022.04 https://www.scopus.com/sourceid/6000195392 https://www.scopus.com/record/display.uri?eid=2-s2.0-85126703493&origin=inward&txGid=eeeaac8c15bd01070f84725c3fb89b03 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=EST%20J%20EARTH%20SCI&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000766812400002