@article{Go¼dziewski:2000,
  author  = "K. Go¼dziewski and A. Maciejewski",
  title   = "Unrestricted planar problem of a symmetric body and a point mass. Triangular libration points and their stability",
  journal = "Celestial Mechanics and Dynamical Astronomy",
  number  = "no 75",
  pages   = "251--285",
  year    = "2000",
}