M. A. Fonseca, J. C. M. da Fonseca, I. do S. L. Beltrão, M. F. B. Rendeiro, P. S. R. da Silva, and P. S. C. Rodrigues, “PARINTINS MATHEMATICS OLYMPIAD: CHALLENGES AND EDUCATIONAL PERSPECTIVES IN RURAL SCHOOLS”, EIC, pp. 322–329, Nov. 2025, Accessed: Jun. 23, 2026. [Online]. Available: https://periodicos.newsciencepubl.com/editoraimpacto/article/view/10062