@misc{indiciaeb512d7dd085e,
  title = {Certain and possible rules for decision making using rough set theory extended to fuzzy sets},
  author = {Dekorvin, Andre and Shipley, Margaret F.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930013170},
  note = {Source identifier: 19930013170}
}