Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286), Hong Kong, China. volume 6; IEEE: pp. 3245-3248; ISBN 978-0-7803-5164-6
Proceedings of 17th International Conference of the Engineering in Medicine and Biology Society, Montreal, QC, Canada. volume 1; IEEE: pp. 637-638; ISBN 978-0-7803-2475-6