@article{eInformatica2010Art1,
  author    = {Anna Felkner and Krzysztof Sacha},
  title     = {{Deriving RT^T Credentials for Role-Based Trust Management}},
  journal   = {{e-Informatica Software Engineering Journal}},
  volume    = {4},
  number    = {1},
  year      = {2010},
  pages     = {9-19},
  url       = {http://www.e-informatyka.pl/attach/e-Informatica_-_Volume_4/eInformatica2010Art1.pdf},
}