Maarten Verduin

A triaxial accelerometer and portable data processing unit for the assessment of daily physical activity

J. D. Janssen, M. Verduin, C.V.C. Bouten, 1997, IEEE Transactions on Biomedical Engineering.

Assessment of energy expenditure for physical activity using a triaxial accelerometer.

J. D. Janssen, K R Westerterp, K. Westerterp, 1994, Medicine and science in sports and exercise.