Tabassum, Rehnuma, Noorzahan Begum, Sultana Ferdousi, Shelina Begum, and Taskina Ali. 2011. “Power Spectral Analysis of Heart Rate Variability in Hypertensive Male”. Journal of Bangladesh Society of Physiologist 6 (1):32-38. https://doi.org/10.3329/jbsp.v6i1.8082.