PÁEZ, Christian et al. Exam problems and solutions XXIX Costa Rican Mathematics Olympiad: Problemas de exámenes y soluciones XXIX Olimpiada Costarricense de Matemáticas. Mathematics, Education and Internet Journal, [S. l.], v. 19, n. 2, 2019. DOI: 10.18845/rdmei.v19i2.4233. Disponível em: https://revistas.tec.ac.cr/index.php/matematica/article/view/4233. Acesso em: 1 may. 2024.