1. Allen, C., Varner, G., Zinser, J.: Prolegomena to any future artificial moral agent. J. Exp. Theor. Artif. Intell. 12(3), 251–261 (2000)
2. Anderson, M., Anderson, S.L.: Machine Ethics. Cambridge University Press, Cambridge (2011)
3. Lin, P., Abney, K., Bekey, G.A.: Robot Ethics: The Ethical and Social Implications of Robotics. MIT Press, Cambridge (2011)
4. Wallach, W., Allen, C.: Moral Machines: Teaching Robots Right from Wrong. Oxford University Press, Oxford (2008)
5. IFR: World Robotics 2013 Service Robot Statistics (2013)