TY - JOUR T1 - Point-Process Nonlinear Models with Laguerre and Volterra Expansions: Instantaneous Assessment of Heartbeat Dynamics JF - IEEE Transactions on Signal Processing Y1 - 2013 A1 - G. Valenza A1 - L. Citi A1 - E. P. Scilingo A1 - R. Barbieri KW - Bioengineering VL - 61 IS - 11 ER -