ELKJÆR, Morten. Detect, diagnose and intervene: Students’ mathematics-specific difficulties with linear equations in an online learning environment. Aarhus, DK: AU Library Scholarly Publishing Services,2024. DOI: 10.7146/aul.530. Disponível em: https://ebooks.au.dk/aul/catalog/book/530. Acesso em: 3 jul. 2025.