Pedraza Rodríguez EM, Almira Gómez C, Cortina Reyna S, Sánchez Hechavarria ME. Modifications of the non-linear parameters of heart rate variability in relation to the arithmetic calculation test. Rev Cubana Inv Bioméd [Internet]. 28 de enero de 2020 [citado 11 de julio de 2025];38(5). Disponible en: https://revibiomedica.sld.cu/index.php/ibi/article/view/548