@inproceedings{ nmr08sohMcI,
  title = {On Planning with Preferences in HTN},
  url = {1225923005_soh-mci-nmr08.pdf},
  booktitle = {the 12th International Workshop on Non-Monotonic Reasoning (NMR08)},
  address = {Sydney, Australia},
  month = {September},
  year = {2008},
  pages = {241-248},
  author = {Shirin Sohrabi and Sheila A. McIlraith}
}