<div class="fn value">
<a href="https://en.wikisource.org/wiki/de:Johann_Georg_Theodor_Gr%C3%A4sse" class="extiw" title="s:de:Johann Georg Theodor Grässe">Johann Georg Theodor Grässe</a></div>
books.google.com, <a rel="nofollow" class="external text" href="https://books.google.com/books?id=ChZ7zRjuKWwC">Google Books</a>