Letras: an architecture and framework for ubiquitous pen-and-paper interaction.

Felix Heinrichs Jürgen Steimle Daniel Schreiber Max Mühlhäuser Letras: an architecture and framework for ubiquitous pen-and-paper interaction. 193-198 2010 EICS http://doi.acm.org/10.1145/1822018.1822048 conf/eics/2010 db/conf/eics/eics2010.html#HeinrichsSSM10