@article{Kisielewicz:1979,
  author  = "M. Kisielewicz",
  title   = "On the non-convergence of successive approximations in the theory of the equation z"xy=f(x, y, z, z'x, z'y)",
  journal = "Annales Polonici Mathematici",
  volume  = "Vol. 36",
  number  = "no 1",
  pages   = "85--93",
  year    = "1979",
}