@inproceedings{liu04parametric,
  author = "Yanhong A. Liu and Tom Rothamel and Fuxiang Yu and Scott D. Stoller and Nanjun Hu",
  title = "Parametric Regular Path Queries",
  booktitle = "Proc.\ ACM SIGPLAN Conference on Programming Language Design and Implementation (PLDI)",
  year = 2004,
  Xpages = "",
  publisher="ACM Press"
}