ACM - affordances
Hokyoung Ryu
Proceedings of the 6th ACM SIGCHI New Zealand chapter’s international conference on Computer-human interaction design centered HCI - CHINZ ’06
The Cell Phone's Impact on Society, Morgan Kaufmann Publishers Inc
framing the issues, Perpetual contact: mobile communication, private talk, public performance, Cambridge University Press, New York, NY, 2002
Icon Books
Heinemann
Design factors of text-based communication via mobile phones