@inproceedings{18260,
  abstract     = {{For uniform computability of regular sets in Euclidean space, previous work has identified twelve 'basic' notions, to (pairs of) which many previous notions considered in literature were shown to be equivalent.

With respect to those basic notions, we now investigate on the computability of natural OPERATIONS on regular sets: union, intersection, complement, convex hull, image, and pre-image under suitable classes of functions.}},
  author       = {{Ziegler, Martin}},
  booktitle    = {{Computability and Complexity in Analysis}},
  issn         = {{0942-5616}},
  number       = {{4-5}},
  pages        = {{392--404}},
  title        = {{{Computable operators on regular sets}}},
  doi          = {{10.1002/malq.200310107}},
  volume       = {{50}},
  year         = {{2004}},
}

@article{18176,
  author       = {{Ziegler, Martin}},
  issn         = {{0942-5616}},
  journal      = {{Mathematical Logic Quarterly (MLQ)}},
  number       = {{S1}},
  pages        = {{157--181}},
  title        = {{{Computability on Regular Subsets of Euclidean Space}}},
  doi          = {{10.1002/1521-3870(200210)48:1+<157::aid-malq157>3.0.co;2-4}},
  volume       = {{48}},
  year         = {{2002}},
}