Prescott, Tony J.; Ahissar, Ehud; Izhikevich, Eugene, eds. (2016). Scholarpedia of Touch. San Diego, USA: Atlantis Press. p. 9. ISBN978-94-6239-133-8. Retrieved 21 February 2017.
Linden, David, J. (March 2015). "Chapter 2". Touch: The Science of Hand, Heart and Mind. Viking. ISBN978-0241184035.{{cite book}}: CS1 maint: multiple names: authors list (link)