1. http://www.vr-if.org/guidelines/
2. http://www.vr-if.org/wp-content/uploads/Lexicon-VRIF.pdf
3. Michael Chen “Considerations for Immersive Media Services” in 3GPP and the VR Industry Forum (VRIF) Workshop on VR Ecosystems & Standards Santa Clara, CA
4. https://standards.ieee.org/develop/wg/VRAR.html
5. https://www.vesa.org/