@ARTICLE{
author={Nikolic Natasa T,Antonijevic Radovan M},
year={2024},
title={Problem-Solving in Biology Teaching: Students' Activities and Their Achievement},
journal={INTERNATIONAL JOURNAL OF SCIENCE AND MATHEMATICS EDUCATION},
volume={22},
number={4},
pages={765-785},
document_type={Article},
} 

@ARTICLE{
author={Ilic-Rajkovic Aleksandra V,Nikolic Natasa T},
year={2024},
title={Authentic context as educational object and green spaces as pedagogical environment: the approach to outdoor learning in the practice of Sreten Adzic (1856-1933)},
journal={PAEDAGOGICA HISTORICA},
volume={60},
number={1},
pages={103-120},
document_type={Article},
}