@article{costa_ferrão_2015,  title={On the complementarity of classical test theory and item response
					models: item difficulty estimates and computerized adaptive
					testing},  volume={23},  ISSN={0104-4036},  url={https://doi.org/10.1590/S0104-40362015000300003},  DOI={10.1590/S0104-40362015000300003},  number={88},  journal={Ensaio: Avaliação e Políticas Públicas em Educação},  publisher={Fundação CESGRANRIO},  author={Costa, Patrícia and Ferrão, Maria Eugénia},  year={2015},  month={Jul},  pages={593–610} }