@article{Maciejewski:2008,
  author  = "A. Maciejewski and M. Przybylska",
  title   = "Differential Galois obstructions for non-commutative integrability",
  journal = "Physics Letters A",
  volume  = "Vol. 372",
  number  = "no 33",
  pages   = "5431--5435",
  year    = "2008",
}