The Smith-Kettlewell auditory breakout box. Conference: Computing Applications to Assist Persons with Disabilities, 1992., Proceedings of the Johns Hopkins National Search, 173 - 176. 10.1109/CAAPWD.1992.217376 (Original work published 1992)
. (1992). T. Fowle
Some practical vocational aids for the blind. Conference: Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in Conference, 5, 1502 - 1503. 10.1109/IEMBS.1989.96310 (Original work published 1989)
. (1989).