@misc{Andrej_Lipej_Analysis,
 author={Andrej Lipej},
 address={Koszalin},
 howpublished={online},
 publisher={Publishing House of the Koszalin University of Technology},
 language={eng},
 type={artykuł w czasopiśmie},
 title={Analysis of numerical instability of centrifugal pumps operational characteristics},
 keywords={centrifugal pump, convergence, numerical analysis, pump characteristics},
}