N. Kimura, M. Kono, and J. Rekimoto. Proceedings of the 2019 CHI Conference on Human Factors in
Computing Systems, Paper 146, page 1--11. New York, NY, USA, Association for Computing Machinery, (May 2019)
A. Kapur, S. Kapur, and P. Maes. 23rd International Conference on Intelligent User Interfaces, page 43--53. New York, NY, USA, Association for Computing Machinery, (March 2018)