@article{Koike:2009gK,
  author = "Koike, Tatsuhiko",
  title = "{Systematic method for solving strings having a symmetry in the space-time}",
  doi = "10.22323/1.075.0009",
  journal = "PoS",
  year = 2009,
  volume = "BHs, GR and Strings",
  pages = "009"
}