@article{Maciejewski:2005,
  author  = "A. Maciejewski and M. Przybylska",
  title   = "Darboux points and integrability of Hamiltonian systems with homogenous polynomial potential",
  journal = "Journal of Mathematical Physics",
  volume  = "Vol. 46",
  number  = "no 6",
  pages   = "062901-1--062901-33",
  year    = "2005",
}