@inproceedings{biundo,
  author = {S. Biundo and B. Schattenberg},
  title = {From Abstract Crisis to Concrete Relief.  A Preliminary Report on Combining State Abstraction and HTN Planning},
  booktitle = {ECP-01. Sixth European Conference on Planning, Toledo, Spain},
  year = {2001},
  pages = {157-168}
}