@article{Brunn2010,
  author    = {Hermann Brunn},
  title     = {Topologische Betrachtungen},
  journal   = {Zeitschrift f{\"u}r Mathematik und Physik},
  volume    = {37},
  number    = {2},
  pages     = {106 -- 116},
  year      = {2010},
}