Critical analysis of autoregressive and fast Fourier transform markers of cardiovascular variability in rats and humans oleh G.J.J. Silva, M.R. Ushizima, P.S. Lessa, L. Cardoso, L.F. Drager, M.M. Atala, F.M. Consolim-Colombo, H.F. Lopes, I.A. Cestari, J.E. Krieger, E.M. Krieger