Emerging virtual worlds [documento eletrónico] : implications for policy and regulation / Fabiana Di Porto, Daniel Foà and Sean Ennis
Next generation virtual worlds [documento eletrónico] : societal, technological, economic and policy challenges for the EU / Isabelle Hupont Torres...[et al.]
Defining virtual worlds [documento eletrónico] : main features and regulatory challenges / Fabiana Di Porto, Daniel Foà