Takaaki Nakatsu

Double-sector Lorenz plot scattering in an R-R interval analysis of patients with chronic atrial fibrillation: Incidence and characteristics of vertices of the double-sector scattering

H. Ohnishi, Youkou Tominaga, S. Kusachi, 1998 .

Analysis of heart rate variability as an index of noncardiac surgical stress

Takafumi Ushiyama, H. Maeta, T. Nakatsu, 2008, Heart and Vessels.

CORRELATION OF LORENZ SCATTERPLOTS WITH FREQUENCY-DOMAIN HEART RATE VARIABILITY

Takashi Murakami, Shinichi Yamane, S. Kusachi, 2002, Clinical and experimental hypertension.