An authorization mechanism for UNIX-based cooperative environments

@article{Fugini1991AnAM,
  title={An authorization mechanism for UNIX-based cooperative environments},
  author={Maria Grazia Fugini and Roberto Bellinzona and Giancarlo Martella},
  journal={Inf. Syst.},
  year={1991},
  volume={16},
  pages={509-535}
}