Hints, L., Hints, O., Kaljo, D., Kiipli, T., Männik, P., Nõlvak, J., Pärnaste, H. 2010. Hirnantian (latest Ordovician) bio- and chemostratigraphy of the Stirnas-18 core, western Latvia. Estonian Journal of Earth Sciences 59 (1), 1-24. | DOI | DETAILS