Number | Name | Date | Kind |
---|---|---|---|
3507988 | Holmes | Apr 1970 | |
3724932 | Cornsweet et al. | Apr 1973 | |
4513317 | Ruoff | Apr 1985 |
Entry |
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"Eye-Controlled Communication Aids" by J. H. ten Kate et al., Medical Progress Through Technology 8:1-21, Springer-Verlag, 1980. |