Early diagenetic chalcopyrite occurrences in Telychian marine red beds of West Estonia and West LatviaKiipli, Enli; Kiipli, Tarmo; Kallaste, ToivoProceedings of the Estonian Academy of Sciences. Geology2000 / 4, p. 294-307 : ill https://artiklid.elnet.ee/record=b1005824*est