@article{Boeker2019,
  author    = {Johann Josef B{\"o}ker},
  title     = {Erwin von Steinbach, ein Baumeister der europ{\"a}ischen Gotik},
  journal   = {Die Ortenau},
  volume    = {99},
  pages     = {19 -- 40},
  doi       = {10.57962/regionalia-20774},
  year      = {2019},
}