@article{Leibniz2008,
  author    = {Gottfried Wilhelm Leibniz},
  title     = {Epistola ad Autorem Dissertationis de figuris animalium quae in lapidibus observantur, et Lithozoorum nomine venire possent [d. i. Christian Maximilian Spener]},
  url       = {http://edoc.bbaw.de/oa/series/reDLQH34sTjRA/PDF/252vQjXsmfVU6.pdf},
  year      = {2008},
}