@misc{Borowski_Krzysztof_Analysis,
 author={Borowski, Krzysztof},
 howpublished={online},
 publisher={Publishing House of the University of Economics in Katowice},
 language={eng},
 type={artykuł},
 title={Analysis of selected seasonality effects in market of barley, canola, rough rice, soybean oil and soybean meal future contracts},
 keywords={callendar effects, commodity market, market efficiency},
}