1. 2016. Pokemon GO Drains A LOT MORE Battery since the last update! https://pokemongohub.net/pokemon-go-drains-a-lot-more-battery-since-the-last-update/. (9 November 2016).
2. Marzieh Jalal Abadi, Luca Luceri, Mahbub Hassan, Chun Tung Chou, and Monica Nicoli. 2014. A collaborative approach to heading estimation for smartphonebased PDR indoor localisation. In Indoor Positioning and Indoor Navigation (IPIN), 2014 International Conference on. IEEE, IEEE, 554--563.
3. Michael Abrash. 2017. After mixed year, mobile AR to drive $108 billion VR/AR market by 2021. http://www.digi-capital.com/news/2017/01/after-mixed-year-mobile-ar-to-drive-108-billion-vrar-market-by-2021/. (January 2017).
4. Clemens Arth and Dieter Schmalstieg. 2011. Challenges of large-scale augmented reality on smartphones. Graz University of Technology, Graz (2011), 1--4.
5. Jeffrey R. Blum, Daniel G. Greencorn, and Jeremy R. Cooperstock. 2012. Smartphone sensor reliability for augmented reality applications. In International Conference on Mobile and Ubiquitous Systems: Computing, Networking, and Services. Springer, 127--138.