split the bibitex files

Because of an overfull vbox it's currently not possible to add more than 5
entries to a bibitex file. However they can easily be splited into multiple
files

bib.bib

@@ -31,11 +31,4 @@
         title = "Two notes on notation",
         howpublished = "\url{http://www.example.com}"
         year = "1992",
-}
-
-@misc{ref6,
-        author = "D.E. Knuth",
-        title = "Two notes on notation",
-        howpublished = "\url{http://www.example.com}"
-        year = "1992",
 }

bib2.bib

@@ -0,0 +1,34 @@
+@misc{ref6,
+        author = "D.E. Knuth",
+        title = "Two notes on notation",
+        howpublished = "\url{http://www.example.com}"
+        year = "1992",
+}
+
+@misc{ref7,
+        author = "D.E. Knuth",
+        title = "Two notes on notation",
+        howpublished = "\url{http://www.example.com}"
+        year = "1992",
+}
+
+@misc{ref8,
+        author = "D.E. Knuth",
+        title = "Two notes on notation",
+        howpublished = "\url{http://www.example.com}"
+        year = "1992",
+}
+
+@misc{ref9,
+        author = "D.E. Knuth",
+        title = "Two notes on notation",
+        howpublished = "\url{http://www.example.com}"
+        year = "1992",
+}
+
+@misc{ref10,
+        author = "D.E. Knuth",
+        title = "Two notes on notation",
+        howpublished = "\url{http://www.example.com}"
+        year = "1992",
+}

main.tex

@@ -64,4 +64,9 @@ Hallo Dies ist ein Test
   
 \end{frame}
 
+\begin{frame}{Referenzen}
+  \bibliography{bib2}
+  
+\end{frame}
+
 \end{document}