scientific article published on 11 January 2013
author: Witold Szyfter, Krzysztof Szyfter, Andrzej Marszałek, Małgorzata Wierzbicka, Wioletta Pietruszewska, Janusz Klatka, Ewa Osuch-Wójcikiewicz, Jacek Składzień, Agata Józefiak
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