1. 3D Printing Industry, 2014. The free beginner’s guide to 3D printing. In: 3D Printing Newsletter. Available at: https://3dprintingindustry.com/3d-printing-basics-free-beginners-guide/. Cited 28 Apr 2017.
2. Ali S, Dadush U, 2011. Trade in intermediates and economic policy. In: CEOR’s Policy Portal. VOX. Available at: http://voxeu.org/article/rise-trade-intermediates-policy-implications. Cited 28 Apr 2017.
3. Atzori L, Iera A, Morabito G, 2010. The internet of things: a survey. Computer networks, 54(15): 2787–2805. doi: 10.1016/j.comnet.2010.05.010
4. Ayers J, Davis J L, Rudolph A, 2002. Neurotechnology for Biomimetic Robots. Cambridge: MIT press.
5. Buyya R, Sukumar K, 2011. Platforms for building and deploying applications for cloud computing. CSI Communications, 31(1): 7–13. doi: arXiv:1104.4379.