J. Pieri

Monitoring the fetal heart non-invasively: a review of methods

M. Peters, J. Stinstra, J. Crowe, 2001, Journal of perinatal medicine.

Compact long-term recorder for the transabdominal foetal and maternal electrocardiogram

J. Crowe, B. Hayes-Gill, J. Pieri, 2006, Medical and Biological Engineering and Computing.

Does fractality in heart rate variability indicate the development of fetal neural processes

John A. Crowe, Barrie Hayes-Gill, M. S. Woolfson, 2004 .