1. Annual report 2012;American Printing House for the Blind,2012
2. The literary code;Bogart,2000
3. Unifying the Braille codes;Bogart,2000
4. A comparison of the frequency of number/punctuation and number/letter combinations in literary and technical materials;Bogart,2004
5. Selected findings from the first international evaluation of the proposed Unified English Braille code;Bogart;Journal of Visual Impairment & Blindness,2005