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Tudomanyos es Muszaki Tajekoztatas ( Scientific and Technical Information;... > 2007 > 54 > 6 > 249-254
Tudomanyos es Muszaki Tajekoztatas ( Scientific and Technical Information;... > 2005 > 52 > 3 > 103-108
Tudomanyos es Muszaki Tajekoztatas ( Scientific and Technical Information;... > 2004 > 51 > 6 > 241-248