BOGDAN ANNA MIHAYLOVNA. ILL-POSED PROBLEMS AND EXAMPLES OF INCORRECT PROBLEMS. Ethiopian International Journal of Multidisciplinary Research, [S. l.], v. 11, n. 06, p. 474–482, 2024. Disponível em: https://eijmr.org/index.php/eijmr/article/view/1830. Acesso em: 2 may. 2026.