@article{JohnFrank2012,
  author    = {Heino John and Dieter Frank},
  title     = {Verwilderte Cotoneaster-Arten in Halle (Saale) und Umgebung},
  journal   = {Mitteilungen zur floristischen Kartierung in Sachsen-Anhalt},
  volume    = {13},
  pages     = {3 -- 28},
  year      = {2012},
}