Sarsekeev А. Textbook "Problem Solving Practice" for students of "Mathematics" major. Рroblems of engineering and professional education, [S. l.], v. 6, n. 06, p. 84, 2023. DOI: 10.32523/2220-685X-2011-6-06-84. Disponível em: https://bulprengpe.enu.kz/index.php/main/article/view/282. Acesso em: 25 apr. 2024.