@misc{W2042037135,
  author = {Rudi Studer and V. Richard Benjamins and Dieter Fensel},
  title = {Knowledge engineering: Principles and methods},
  year = {1998},
  howpublished = {Data \& Knowledge Engineering},
  doi = {https://doi.org/10.1016/s0169-023x(97)00056-6}
}