To cite XiMpLe in publications use:

Michalke, M. (2013). XiMpLe: A simple XML tree parser and generator (Version 0.03-21). Available from http://reaktanz.de/?c=hacking&s=XiMpLe

Corresponding BibTeX entry:

  @Manual{,
    title = {XiMpLe: A simple XML tree parser and generator},
    author = {Meik Michalke},
    year = {2013},
    note = {(Version 0.03-21)},
    url = {http://reaktanz.de/?c=hacking&s=XiMpLe},
  }