1. J. H. Seo and H. B. Roh, “The Improvement of Mouse - Keyboard Control UI for 3D VR Contents,” Journal of the Korea Contents Association, Vol. 5, No. 6, pp. 184-192, December 2005.
2. S. I. Moon, A Study on the Improvement of Visibility of VR World Space Metro UI, Master’s Thesis, Hongik University, Seoul, 2020.
3. E. Fagerholt and M. Lorentzon, Beyond the HUD - User Interfaces for Increased Player Immersion in FPS Games, Master’s Thesis, Chalmers University of Technology, Goteborg, Sweden, 2009.
4. Y. N. Yoon, A Study on UI Design Based on User's Experience for VR Sport Screen, Master’s Thesis, Graduate School of Industrial Convergence of Hanyang University, Seoul, 2021.
5. M. H. Park, R. K. Lee, H. Han, K. M. Yang, T. H. Choi, and D. Y. Kong, “A VR System for Evaluation of Product Design and UI,” in Proceedings of HCI Korea, pp. 90-95, January 2005.