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2. Beck-Winchatz, B. et al. Using asteroid scale models in space science education for blind and visually impaired students. Astronomy Education Review (2003).
3. Buehler, E. et al. Sharing is Caring: Assistive Technology Designs on Thingiverse. CHI '15.
4. Buehler, E. et al. ABC and 3D: opportunities and obstacles to 3D printing in special education environments. ASSETS '14.
5. Instructables, Making Tactile 3D Prints Talk. http://www.instructables.com/id/Making-Tactile-3D-Prints-Talk/, Accessed on June 25th, 2015