@misc{Traczyk_Wiesław_Structural,
 author={Traczyk, Wiesław},
 howpublished={online},
 publisher={Instytut Łączności - Państwowy Instytut Badawczy, Warszawa},
 language={ang},
 title={Structural representations of unstructured knowledge, Journal of Telecommunications and Information Technology, 2005, nr 3},
 type={artykuł},
 keywords={ontology, knowledge representation languages, textual knowledge},
}