TY - JOUR SN - 0031-9007 A1 - Kraskov, A A1 - Nadler, W A1 - Stogbauer, H A1 - Grassberger, P N2 - A Comment on the Letter by Albert C.-C. Yang et al., Phys. Rev. Lett. 90 108103 (2003). The authors of the Letter offer a Reply. IS - 10 AV - public ID - discovery69983 UR - http://dx.doi.org/10.1103/PhysRevLett.92.109801 Y1 - 2004/03/12/ TI - Comment on "Linguistic analysis of the human heartbeat using frequency and rank order statistics" N1 - © 2004 The American Physical Society JF - PHYS REV LETT VL - 92 PB - AMERICAN PHYSICAL SOC ER -