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Yeragani, Vikram Kumar and Rao, Radha Krishna KA and Smitha, Ramesh M and Pohl, Robert B and Balon, Richard and Srinivasan, K (2002) Diminished chaos of heart rate time series in patients with major depression. In: Biological Psychiatry, 51 (9). pp. 733-744.
Yeragani, VK and Rao, Radhakrishna and Jayaraman, Anusha and Pohl, Robert and Balon, Richard and Glitz, Debra (2002) Heart rate time series: decreased chaos after intravenous lactate and increased non-linearity after isoproterenol in normal subjects. In: Psychiatry Research, 109 (1). pp. 81-92.