@article{Dienst2005,
  author    = {Karl Jakob Dienst},
  title     = {Zu Sekanten symmetrische Halbovoide},
  journal   = {Archiv der Mathematik},
  volume    = {28},
  pages     = {325 -- 329},
  doi       = {10.1007/BF01223930},
  year      = {2005},
}