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<h2 id="references">References</h2> <ol> <li id="fn:1"><p>Frenzel, Gerhard (1953). "Die Erzparagenese des Katzenbuckels im Odenwald". Contributions to Mineralogy and Petrology (in German). 3 (6): 409–444. doi:10.1007/BF01129196.. Retrieved 2012-04-11. <a href="/wiki/Doi_(identifier)" target="_blank">/wiki/Doi_(identifier)</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> </ol>