@article{Sperber2023,
  author    = {Wolfram Sperber},
  title     = {Mathematische Gesellschaft der DDR - die Vorgeschichte},
  journal   = {Mathematische Semesterberichte},
  volume    = {70},
  number    = {2},
  pages     = {103 -- 146},
  doi       = {10.1007/s00591-023-00350-5},
  year        = {2023},
}