The 26th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, San Francisco, CA, USA. IEEE: 5447-5450; ISBN 978-0-7803-8439-2
[1990] Proceedings of the Twelfth Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Philadelphia, PA, USA. IEEE: 1502-1504; ISBN 978-0-87942-559-3