Hirnantia sagittifera (Brachiopoda) and Mucronaspis mucronata s.l. (Trilobita) in the Upper Ordovician of the East Baltic : taxonomy and distributionHints, Linda; Pärnaste, Helje; Gailite, Lilita-IlgaEstonian journal of earth sciences2012 / p. 65-81 : ill https://www.researchgate.net/publication/258439664_Hirnantia_sagittifera_Brachiopoda_and_Mucronaspis_mucronata_sl_Trilobita_in_the_Upper_Ordovician_of_the_East_Baltic_Taxonomy_and_distribution New Early Katian species of Leptestiidae and Hesperorthidae (Brachiopoda) from LithuaniaPaškevičius, Juozas; Hints, LindaEstonian journal of earth sciences2016 / p. 75-84 : ill http://dx.doi.org/10.3176/earth.2016.05 The Hirnantian (Late Ordovician) brachiopod fauna of the East Baltic : taxonomy of the key speciesHints, Linda; Harper, David A. T.Acta palaeontologica polonica2015 / p. 395-420 : ill http://dx.doi.org/10.4202/app.2013.0010