A unified non-linear approach based on recurrence quantification analysis and approximate entropy: application to the classification of heart rate variability of age-stratified subjectsVikramjit Singh, Amritpal Singh, Jagdip Singh Sohal et al.|Medical & Biological Engineering & Computing|2018Cited by 24
Multi-Scale Fractal Dimension to Quantify Heart Rate Variability and Systolic Blood Pressure Variability: A Postural Stress AnalysisVikramjit Singh, Amritpal Singh, Amit Gupta et al.|Fluctuation and Noise Letters|2019Cited by 5