@misc{W2087739686,
  author = {Roy Rada and Hafedh Mili and Ellen J. Bicknell and M. Blettner},
  title = {Development and application of a metric on semantic nets},
  year = {1989},
  howpublished = {IEEE Transactions on Systems Man and Cybernetics},
  doi = {https://doi.org/10.1109/21.24528}
}