@misc{Błaczkowka_Anna_An_2016,
 author={Błaczkowka, Anna},
 copyright={Wyższa Szkoła Bankowa we Wrocławiu},
 address={Wrocław},
 howpublished={online},
 year={2016},
 publisher={Wyższa Szkoła Bankowa we Wrocławiu},
 language={eng},
 type={artykuł},
 title={An Analysis of Differentiated Levels of Knowledge of Junior High School Graduates in 2002-2013},
 keywords={knowledge of junior high schools graduates, trend, classification, k-means},
}