F. Paternò, C. Santoro, and L. Spano. Proceedings of the 1st ACM SIGCHI symposium on Engineering interactive computing systems
, page 85--90. New York, NY, USA, ACM, (2009)
K. Gajos, J. Wobbrock, and D. Weld. Proceedings of the twenty-sixth annual SIGCHI conference on Human factors in computing systems
, page 1257--1266. New York, NY, USA, ACM, (2008)