@inproceedings{Koike:2009gK,
  author = "Koike, Tatsuhiko",
  title = "{Systematic method for solving strings having a symmetry in the space-time}",
  doi = "10.22323/1.075.0009",
  booktitle = "Proceedings of Black Holes in General Relativity and String Theory {\textemdash} PoS(BHs, GR and Strings)",
  year = 2009,
  volume = "075",
  pages = "009"
}