• Revision of Psammosteus livonicus Obruchev (Agnatha, Heterostraci) from the Devonian Amata regional stage of the NW of the East European platformGlinskiy, Vadim N.; Mark-Kurik, ElgaEstonian journal of earth sciences2016 / p. 1-18 : ill https://doi.org/doi: https://artiklid.elnet.ee/record=b2760746*est https://www.scopus.com/sourceid/6000195392 https://www.scopus.com/record/display.uri?eid=2-s2.0-84959452837&origin=inward&txGid=4727d43f2dbb117619e05c6690569aa0 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=EST%20J%20EARTH%20SCI&year=2016 https://www.webofscience.com/wos/woscc/full-record/WOS:000372295200001