Detection of transients in heart rate variability signals using a time-varying varying Karhunen-Loeve expansion. - Benhur Aysin; Luis F. Chaparro; Ilan Grave; Vladimir Shusterman (ICASSP, 2000)

Orthonormal-basis partitioning and time-frequency representation of cardiac rhythm dynamics. - Benhur Aysin; Luis F. Chaparro; Ilan Grave; Vladimir Shusterman (IEEE Trans. Biomed. Eng., 2005)

Effect of Respiration in Heart Rate Variability (HRV) Analysis. - Benhur Aysin; Elif Aysin (EMBC, 2006)