• Carbon isotope systematics of the Cambrian-Vendian aquifer system in the northern Baltic Basin : implications to the age and evolution of groundwaterRaidla, Valle; Kirsimäe, Kalle; Vaikmäe, Rein; Kaup, Enn; Martma, TõnuApplied geochemistry2012 / p. 2042-2052 : ill https://doi.org/10.1016/j.apgeochem.2012.06.005