@ARTICLE{
author={Zubac Marina,Milinkovic Dragica,Markovic Olivera R},
year={2021},
title={Internal Motivation and Students' Knowledge of Math},
journal={CROATIAN JOURNAL OF EDUCATION-HRVATSKI CASOPIS ZA ODGOJ I OBRAZOVANJE},
volume={23},
number={2},
pages={317-342},
document_type={Article},
} 

@ARTICLE{
author={Markovic Olivera R,Pikula Milenko,Zubac Marina},
year={2019},
title={A Critical Analysis of the PISA Mathematics Tasks},
journal={CROATIAN JOURNAL OF EDUCATION-HRVATSKI CASOPIS ZA ODGOJ I OBRAZOVANJE},
volume={21},
number={1},
pages={233-274},
document_type={Article},
}