@misc{Kondratek_Bartosz_IRT,
 author={Kondratek, Bartosz and Pokropek, Artur},
 howpublished={online},
 publisher={Educational Research Institute},
 language={pol},
 type={article},
 title={IRT and educational measurement},
 keywords={IRT, scaling, complex research designs, linking and equating, adaptive testing, item mapping},
}