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git-svn-id: https://svn.dealii.org/trunk@32387 0785d39b-7218-0410-832d-ea1e28bc413d

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@@ -315,6 +315,15 @@ Pressurized Fractures
          <br>
          Comput. Methods Appl. Mech. Engrg., vol. 271, pp. 69-85, 2014.
         </li>
+
+       <li> J. Willems
+         <br>
+         <strong>Robust Multilevel Methods for General Symmetric Positive Definite Operators
+         </strong>
+         <br>
+         SIAM J. Numer. Anal.  52  (2014),  no. 1, 103-124.
+        </li>
+
       </ol>