The crystalline basement of Estonia : rock complexes of the Palaeoproterozoic Orosirian and Statherian and Mesoproterozoic Calymmian periods, and regional correlationsKirs, Juho; Puura, Väino; Soesoo, Alvar; Klein, Vello; Konsa, Mare; Koppelmaa, Heino; Niin, Mati; Urtson, KristjanEstonian journal of earth sciences2009 / 4, p. 219-228 : ill https://artiklid.elnet.ee/record=b1943909*est

The crystalline basement of Estonia: rock complexes of the Paleoproterozoic Orosirian and Statherian and Mesoproterozoic Calymmian Periods, and regional correlationsPuura, Väino; Kirs, Juho; Klein, Vello; Konsa, Mare; Koppelmaa, Heino; Niin, Mati; Soesoo, Alvar; Urtson, KristjanThe Seventh Baltic Stratigraphical Conference : 17-18 May 2008, Tallinn, Estonia : abstracts & field guide2008 / p. 55