Pleistocene age paleo-groundwater inferred from waterstable isotope values in the central part of the Baltic Artesian BasinBabre, Alise; Kalvans, Andis; Popovs, Konrads; Retike, Inga; Delina, Aija; Vaikmäe, Rein; Martma, TõnuIsotopes in environmental and health studies2016 / p. 706-725 : ill http://dx.doi.org/10.1080/10256016.2016.1168411

The recharge of glacial meltwater and its influence on the geochemical evolution of groundwater in the Ordovician-Cambrian aquifer system, northern part of the Baltic Artesian BasinPärn, Joonas; Raidla, Valle; Vaikmäe, Rein; Martma, Tõnu; Ivask, Jüri; Mokrik, Robert; Erg, KatrinApplied geochemistry2016 / p. 125-135 : ill https://doi.org/10.1016/j.apgeochem.2016.07.007