@article{Kerner:2009+C,
  author = "Kerner, Richard",
  title = "{New approximation methods in General Relativity: geodesic deviations and deformations of embeddings}",
  doi = "10.22323/1.081.0015",
  journal = "PoS",
  year = 2009,
  volume = "ISFTG",
  pages = "015"
}