@ARTICLE{Flotyński_Marcin_Comparison_2017,
 author={Flotyński, Marcin},
 number={No 1},
 journal={Finanse},
 howpublished={online},
 year={2017},
 publisher={Komitet Nauk o Finansach PAN},
 title={Comparison of the results of long and short straddle option strategieson the WIG20 during 2005–2015},
 URL={http://journals.pan.pl/Content/102465/PDF/Fin.%201(10)-17%2010-J.Flotynski.pdf},
}