@article{26280,
  author       = {{Meer, Klaus and Ziegler, Martin}},
  issn         = {{0885-064X}},
  journal      = {{Journal of Complexity}},
  pages        = {{3--15}},
  title        = {{{An explicit solution to Post's Problem over the reals}}},
  doi          = {{10.1016/j.jco.2006.09.004}},
  year         = {{2008}},
}

@article{17985,
  author       = {{Ziegler, Martin}},
  issn         = {{0885-064X}},
  journal      = {{Journal of Complexity}},
  pages        = {{827--849}},
  title        = {{{Effectively open real functions}}},
  doi          = {{10.1016/j.jco.2006.05.002}},
  year         = {{2006}},
}