H. van Bolhuis

Heart rate and heart rate variability as indexes of sympathovagal balance.

C. A. Swenne, M. Bootsma, H. van Bolhuis, 1994, The American journal of physiology.

Reproducibility of heart rate and rate variability responses to incremental head-up tilt

C. A. Swenne, M. Bootsma, H. van Bolhuis, 1993, Proceedings of Computers in Cardiology Conference.