@article{Ronniger2007,
  author    = {Karl Ronniger},
  title     = {Einige Bemerkungen {\"u}ber Gentiana Favrati Rittener},
  journal   = {Magyar botanikai lapok = Ungarische botanische Bl{\"a}tter},
  volume    = {25},
  pages     = {255 -- 261},
  year      = {2007},
}