MUTANEN, Arto. About Practical Problem Solving. Problemos, [S. l.], v. 89, p. 85–94, 2016. DOI: 10.15388/Problemos.2016.89.9889. Disponível em: https://journals.vu.lt./problemos/article/view/9889. Acesso em: 19 apr. 2025.