@inproceedings{siegel13undefined,
  author = {H. Siegel and B. Mihaila and A. Simon},
  title = {The {U}ndefined {D}omain: {P}recise {R}elational {I}nformation for {E}ntities that {D}o {N}ot {E}xist},
  booktitle = {Asian Symposium on Programming Languages and Systems},
  editor = {C. Shan},
  month = {December},
  year = 2013,
  publisher = {Springer},
  address = {Melbourne, Australia},
}