Division of Informatics and EngineeringSoomere, TarmoEstonian Academy of Sciences year book = Annales Academiae Scientiarum Estonicae 20122013 / p. 25-29

Estonian Academy of Sciences year book = Annales Academiae Scientiarum Estonicae 2012Mõtus, Leo2013 https://www.ester.ee/record=b1218154*est