Xiaodong Gong, Maoqi Liu. Design of Smartphone 9-Key Keyboard Based on Spelling Rule of Pinyin. In Aaron Marcus, Wentao Wang 0007, editors, Design, User Experience, and Usability: Designing Interactions - 7th International Conference, DUXU 2018, Held as Part of HCI International 2018, Las Vegas, NV, USA, July 15-20, 2018, Proceedings, Part II. Volume 10919 of Lecture Notes in Computer Science, pages 557-574, Springer, 2018. [doi]