@inproceedings{,
  author = "Bruno C. d. S. Oliveira",
  booktitle = "23rd European Conference on Object Oriented Programming (ECOOP)",
  editor = "Sophia Drossopoulou",
  journal = "23rd European Conference on Object Oriented Programming (ECOOP)",
  location = "Genova, Italy",
  month = "July",
  title = "Modular Visitor Components: A Practical Solution to the Expression Families Problem",
  year = "2009",
}