@misc{Urbański_Mariusz_Optimal_2003,
 author={Urbański, Mariusz},
 volume={51},
 number={2},
 editor={Polska Akademia Nauk.},
 copyright={Rights Reserved - Restricted Access},
 address={Warsaw},
 howpublished={online},
 year={2003},
 publisher={Polska Akademia Nauk. Centrum Upowszechniania Nauki.},
 language={eng},
 type={Text},
 title={Optimal periodic orbits for non-recurrent rational functions},
}