A δ18O 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 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS