Estimating the transfer function between the CAP and radial EBI cardiac periods :  use of PCA for dominating spectral features analysisKrivošei, Andrei; Uuetoa, Hasso; Min, Mart; Lamp, Jürgen; Annus, Paul; Uuetoa, TiinaThe 10th International Conference on Bioelectromagnetism : proceedings2015 / [4] p. : ill