Takeshi Nagami, Yoshikazu Seki, Hidenori Sakai, Hiroaki Ikeda. Usability Evaluation of 4-Direction Keys for Ladder Menu Operation. In Masaaki Kurosu, editor, Human-Computer Interaction. Interaction Platforms and Techniques - 18th International Conference, HCI International 2016, Toronto, ON, Canada, July 17-22, 2016. Proceedings, Part II. Volume 9732 of Lecture Notes in Computer Science, pages 330-340, Springer, 2016. [doi]
Abstract is missing.