Becker-Pestka, Daria. “A Portuguese Model of E-Learning for Prisoners As an Example of Successful Application of New Technologies in Education of Convicts: A Case Study”. International Journal of Research in E-learning (October 28, 2024): 1–30. Accessed May 7, 2025. https://trrest.vot.pl/ojsus/index.php/IJREL/article/view/17575.