K. Vertanen, and P. Kristensson. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, page 1497--1500. New York, NY, USA, ACM, (2008)
K. Vertanen, and P. Kristensson. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, page 1497--1500. New York, NY, USA, ACM, (2008)