@inproceedings{liu02indexed,
  author = "Yanhong A. Liu and Scott D. Stoller",
  title = "Program optimization using indexed and recursive data structures",
  booktitle = "Proceedings of the 2002 ACM SIGPLAN Symposium on Partial 
              Evaluation and Semantics-Based Program Manipulation (PEPM)",
  year = 2002,
  month = jan,
  publisher="ACM Press",
  pages="108-118"
  }