@misc{indiciae8ea9d962107f,
  title = {An Argument for a Hybrid HTN/Operator-Based Approach to Planning},
  author = {Estlin, T. A. and Chien, S. A. and Wang, X.},
  year = {1997},
  url = {https://ntrs.nasa.gov/citations/20060035482},
  note = {Source identifier: 20060035482}
}