@book{Purkyne2007,
  author    = {Jan Evangelista Purkyne},
  title     = {[Symbolae ad ovi avium historiam ante incubationem] Joan. Fried. Blumenbachio eq. Guelph. viro de omni scientia naturali uni omnium maxime merito Universitatis Georgiae Augustae decori eximio die XIX. Septembri MDCCCXXV summorum in medicina honorum semisaecularia faustis ominibus celebranti gratulatur ordo medicorum Vratislaviensium},
  year      = {2007},
}