@article{Bomble2017,
  author    = {Ferdinand Wolfgang Bomble},
  title     = {Persicaria-Hybriden in Aachen und Umgebung: P. x condensata (= P. maculosa x P. mitis), P. x subglandulosa (= P. hydropiper x P. minor) und P. x wilmsii (= P. minor x P. mitis)},
  journal   = {Jahrbuch des Bochumer Botanischen Vereins},
  volume    = {8},
  pages     = {30 -- 47},
  year      = {2017},
}