1. Adadi A, Berrada M (2018) Peeking inside the black-box: a survey of explainable artificial intelligence (XAI). IEEE Access 6:52138–52160
2. Allen C, Varner G, Zinser J (2000) Prolegomena to any further artificial moral agent. J Exp Theor Artif Intell 12:251–261
3. Anderson M, Anderson SL (2007) Machine ethics: creating an ethical intelligent agent. AI Mag 4:15–26
4. Angwin J, Larson J, Mattu S & Kirchner L 2016 Machine bias: there’s software used across the country to predict future criminals. And it’s biased against blacks, PROPUBLICA (May 23, 2016). Available online at https://www.propublica.org/article/machine-bias-risk-assessments-in-criminal-sentencing
5. Assaro P (2006) What should we want from a robot ethic? Int Rev Inf Ethics 6:9–16