What Should Students Pay for University Course Readings? An Empirical, Economic, and Legal Analysis. SciELO Preprints, 2021. DOI: 10.1590/SciELOPreprints.1694. Disponível em: https://preprints.scielo.org/index.php/scielo/preprint/view/1694. Acesso em: 1 jun. 2026.