@inproceedings{Oliveira:2007BS,
  author = "Oliveira, Henrique Pereira",
  title = "{Spectral Methods in Gravitation and Cosmology }",
  doi = "10.22323/1.031.0029",
  booktitle = "Proceedings of Fifth International Conference on Mathematical Methods in Physics  {\textemdash} PoS(IC2006)",
  year = 2007,
  volume = "031",
  pages = "029"
}