15th International Zurich Symposium and Technical Exposition on Electromagnetic Compatibility, Zurich, Zurich, Switzerland. IEEE: pp. 149-154; ISBN 978-1-5090-3197-9
Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (IEEE Cat. No.03CH37439), Cancun, Mexico. IEEE: pp. 3257-3260; ISBN 978-0-7803-7789-9