A d18O isoscape for the shallow groundwater in the Baltic Artesian basinRaidla, Valle; Kern, Zoltan; Pärn, Joonas; Ivask, Jüri; Martma, Tõnu; Vaikmäe, ReinJournal of hydrology2016 / p. 254-267 : ill https://doi.org/10.1016/j.jhydrol.2016.09.004 A 18O isoscape for the shallow groundwater in the Baltic Artesian Basin [Online resource]Raidla, Valle; Kern, Zoltan; Babre, Alise; Erg, Katrin; Ivask, Jüri; Kohan, Balazs; Martma, Tõnu; Mokrik, Robert; Pärn, Joonas; Vaikmäe, Rein43rd IAH Congress : Groundwater and Society : 60 years of IAH : September 25-29th 2016, Montpellier, France2016 / p. [70], abstract no 1430 https://www.cfh-aih.fr/images/DOCS/2-Colloques/Colloque_2016_Montpellier/Site_web/IAH2016_AbstractBOOK.pdf