1. Greenlight 2016. Virtual Reality Industry Report. Retrieved Dec. 15, 2018 from https://greenlightinsights.com/industry-analysis/virtual-reality-stats-2016/.
2. Song, M. and DiPaola, S. 2017. Framework for a bio-responsive VR for interactive real-time environments and interactives. In Proceedings of the Conference on Electronic Visualisation and the Arts. (London, U.K., July 10 - 13, 2017). EVA'17. 377--384.
3. DiPaola, S., Song, M. and Kadir, A. 2017. A system and framework for bio-responsive VR in art therapeutics. 3rd Annual Innovations in Psychiatry and Behavioral Health: Virtual Reality and Behavior Change. (CA, USA, October 6-7, 2017). Poster Presentation.
4. A training 'class' at Chalons (December 25 1909) Flight Magazine, 830.
5. Sutherland, I. 1963. Sketchpad-A man-machine graphical communication system. Tech. Rep. No. 296. MIT Lincoln Laboratory.