@misc{Hałas_Stanisław_Use,
 author={Hałas, Stanisław and Pieńkos, Tomasz and Pelc, Andrzej and Wójtowicz, Artur},
 howpublished={online},
 publisher={Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej},
 language={eng},
 type={artykuł},
 title={Use of negative ion mass spectrometry for simultaneous determination of sulfur isotope ratios Δ33S and Δ34S},
 keywords={isotope anomalies, terrestrials minerals, sulfates, sulfides},
}