1. Simple visual reaction time: Sex and age differences;Bleecker;Dev. Neuropsychol.,1987
2. About the center – about the center: Ronald L. Mace: last speech;Center for Universal Design, College of Design, North Carolina State University,2017
3. Universal design principles – ABOUT UD:;Center for Universal Design, College of Design, North Carolina State University,2017
4. Universal design principles – about UD: universal design principles;Center for Universal Design, College of Design, North Carolina State University,2017
5. What is universal desgign;Centre for Excellence in Universal Design by the National Disability Authority,2017