@inproceedings{ mpref08SohMcI,
  title = {On Planning with Preferences in HTN},
  url = {1225922953_soh-mci-m-pref08.pdf},
  booktitle = {the 4th Multidisciplinary Workshop on Advances in Preference Handling (M-Pref08) at AAAI-08},
  author = {Shirin Sohrabi and Sheila A. McIlraith},
  month = {July},
  year = {2008},
  pages = {103-109},
  address = {Chicago, IL, USA}
}