@inproceedings{Novello:2007IQ,
  author = "Novello, Mario",
  title = "{The Mass of the Graviton and the Cosmological Constant Puzzle}",
  doi = "10.22323/1.031.0009",
  booktitle = "Proceedings of Fifth International Conference on Mathematical Methods in Physics  {\textemdash} PoS(IC2006)",
  year = 2007,
  volume = "031",
  pages = "009"
}