@article{Jarczyk:2015,
  author  = "W. Jarczyk",
  title   = "Improving regularity of solutions of a difference equation",
  journal = "Aequationes Mathematicae",
  volume  = "Vol. 89",
  number  = "no. 2",
  pages   = "383--391",
  year    = "2015",
}