PILLON, A. E.; ULBRICHT, V. R. .; MÁRCIO VIEIRA DE SOUZA. INVESTIGATION ON HEART RATE VARIABILITY INDICES AND MENTAL STRESS IN PERFORMANCE WITH FRACTIONS: A STUDY IN THE FINAL YEARS OF ELEMENTARY SCHOOL IN FLORIANÓPOLIS-SC. e3 — Revista de Economia, Empresas e Empreendedores na CPLP, [S. l.], v. 10, n. 1, p. 49–69, 2024. DOI: 10.29073/e3.v10i1.916. Disponível em: https://revistas.ponteditora.org/index.php/e3/article/view/916. Acesso em: 23 apr. 2026.