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2. Accessing algebra via MathSpeak™: Understanding the potential and pitfalls for students with visual impairments;Bouck;Journal of Special Education Technology,2013
3. Brownstein , B. Frankel , L. 2015 ClearSpeak authoring tutorial http://www.dessci.com/en/reference/ies-ets/instructional_material/ClearSpeakAuthoringTutorial.docx
4. Brownstein , B. Soiffer , N. Frankel , L. 2015a http://www.dessci.com/en/reference/ies-ets/instructional_material/ClearSpeakExamples.zip
5. Brownstein , B. Soiffer , N. Frankel , L. 2015b http://www.dessci.com/en/reference/ies-ets/instructional_material/ClearSpeakRulesAndPreferences.docx