@article{BF87,
  author = "Burke, Michael G. and Fisher, Gerald A.",
  title = "{A practical method for LR and LL syntactic error diagnosis and recovery}",
  journal = "ACM Transactions on Programming Languages and Systems",
  volume = "9",
  number = "2",
  pages = "164-197",
  month = "Apr.",
  year = "1987",
  url = "http://www.cs.berkeley.edu/~jcondit/pl-prelim/burke87practical.pdf",
}