1. ABIResearch Developers to Invest $2.5 Billion in Augmented Reality in 2018. Look for Enterprise to Drive Smart Glasseshttps://www.abiresearch.com/press/developers-to-invest-25-billion-in-augmented-reali
2. eMarketer Worldwide Internet and Mobile Users: eMarketer’s Updated Estimates and Forecast for 2017–2021https://www.emarketer.com/Report/Worldwide-Internet-Mobile-Users-eMarketers-Updated-Estimates-Forecast-20172021/2002147
3. The Smartphone Psychology Manifesto
4. Statista Global Retail e-Commerce Market Size 2014–2021http://www.statista.com/statistics/222128/global-e-commerce-sales-volume-forecast/
5. Taxonomy of Mixed Reality Visual Displays;Milgram;IEICE Trans. Inf. Syst.,1994