• Al2O3/TiO2 ratio of the clay fraction of Late Ordovician–Silurian carbonate rocks as an indicator of paleoclimate of the Fennoscandian ShieldKiipli, Enli; Kiipli, Tarmo; Kallaste, Toivo; Siir, SvenPalaeogeography, palaeoclimatology, palaeoecology2012 / p. 312-320 : ill https://www.sciencedirect.com/science/article/pii/S0031018212005494