@misc{Sielanko_Juliusz_Computer,
 author={Sielanko, Juliusz and Turek, Marcin and Tanga, A.},
 howpublished={online},
 publisher={Wydaw. Uniwersytetu Marii Curie-Skłodowskiej},
 language={eng},
 type={artykuł},
 title={Computer simulation of the potential distribution inside the plasma chamber of negative ion source},
}