@article{KasperekButtler2016,
  author    = {Gerwin Kasperek and Karl Peter Buttler},
  title     = {Ein Vorkommen von Heterotheca camporum (Asteraceae) in Frankfurt am Main},
  journal   = {Floristische Rundbriefe},
  volume    = {48-49},
  pages     = {67 -- 76},
  year      = {2016},
}