@ARTICLE{Kaczorek_T._Positive_2010,
 author={Kaczorek, T.},
 volume={58},
 number={No 3},
 journal={Bulletin of the Polish Academy of Sciences Technical Sciences},
 pages={453-458},
 howpublished={online},
 year={2010},
 title={Positive linear systems with different fractional orders},
 URL={http://journals.pan.pl/Content/83148/PDF/11_paper.pdf},
 doi={10.2478/v10175-010-0043-1},
}