@InProceedings{Torre05IntroducingOntologically,
  Title                    = {Introducing Ontologically Founded Roles in Object Oriented Programming: powerJava},
  Author                   = {Baldoni, M. and Boella, G. and van der Torre, L.},
  Booktitle                = {Proceedings of ROLES05},
  Year                     = {2005},

  Abstract                 = {In this paper we introduce a new view on roles in Object Oriented
programming languages. Our notion is based on an ontological
analysis of social roles and attributes to roles the following
properties: first, a role is always associated not only to
an object instance playing the role, but also to another object
instance which constitutes the context of the role and which
we call institution. Second, the definition of a role depends
on the definition of the institution which constitutes its context.
Third, this second property allows to endow players of
roles with powers to modify the state of the institution and of
the other roles of the same institution. As an example of this
model of roles in Object Oriented programming languages,
we introduce a role construct in Java.},
  Url                      = {http://icr.uni.lu/leonvandertorre/papers/roles05.pdf}
}