@article{Mumm2020,
  author    = {Hans-Martin Mumm},
  title     = {Maik{\"a}fer flieg …},
  journal   = {Heidelberg : Jahrbuch zur Geschichte der Stadt},
  series    = {aus den Feldpostbriefen des Kaufmanns Heinrich Heindel (1907-1944)},
  volume    = {25 (2021)},
  pages     = {223 -- 236},
  doi       = {10.57962/regionalia-24402},
  year      = {2020},
}