Mauro Avila Sota, Alexandra Voit, Ahmed Shereen Hassan, Albrecht Schmidt, and Tonja Machulla. Self-Identifying Tactile Overlays. Proceedings of the 20th International ACM SIGACCESS Conference on Computers and Accessibility, 423--425, ACM, New York, NY, USA, 2018. [PUMA: myown self-identification tactile-overlays visual-impairments] URL