Mean grain size fluctuations of the siliciclastic component in the Aizpute-41 core : implication for end-Ordovician glaciationKiipli, Enli; Siir, Sven; Kallaste, Toivo; Kiipli, TarmoEstonian journal of earth sciences2014 / p. 257-263 : illhttps://artiklid.elnet.ee/record=b2705898*est