D. Lee, K. Son, J. Lee, and S. Bae, PhantomPen: virtualization of pen head for digital drawing free from pen occlusion & visual parallax, Proceedings of the 25th Annual ACM symposium on User interface software and technology. (UIST '12, pp.331-340, 2012.

J. Matejka, T. Grossman, J. Lo, and G. Fitzmaurice, The design and evaluation of multi-finger mouse emulation techniques, Proceeding of the SIGCHI Conference on Human Factors in Computing Systems. (CHI '09), pp.1073-1082, 2009.

D. Vogel and R. Balakrishnan, Occlusion-aware interfaces, Proceedings of the SIGCHI Conference on Human Factors in Computing Systems. (CHI '10), pp.263-272, 2010.

A. Roudaut, S. Huot, and E. Lecolinet, TapTap and MagStick: Improving One-Handed Target Acquisition on small touch-screens, Proceedings of the working conference on Advanced visual interfaces. (AVI '08), pp.146-153, 2008.
URL : https://hal.archives-ouvertes.fr/inria-00550694

J. Lai and D. Zhang, ExtendedThumb: a motion-based virtual thumb for improving one-handed target acquisition on touch-screen mobile devices, CHI '14 Extended Abstracts on Human Factors in Computing Systems. (CHI EA '14), pp.1825-1830, 2014.

K. Fennedy, H. Lee, I. Ko, Y. Tan, D. Zhang et al., Augmenting User-Maintained Interaction Through Mode Locking and Reversing. 32nd British Computer Society Human Computer Interaction Conference, 2018.

H. Lee, I. Ko, Y. R. Tan, D. Zhang, and C. Li, Usability Impact of Occlusion-free Techniques on Commonly-used Multitouch Actions. 5 th International ACM In Cooperation HCI and UX Conference, 2019.