<a name="Intro"></a>
<h1>Introduction</h1>
+
+<h3>List of references</h3>
<h1>Results</h1>
+...
+
+<table align="center" class="tutorial" cellspacing="3" cellpadding="3">
+ <tr>
+ <td align="center">
+ @image html "Q1P0_Ref_2.png"
+ <p align="center">
+ Two refinement levels for a tri-linear displacement formulation.
+ </p>
+ </td>
+ <td align="center">
+ @image html "Q2P1_Ref_1.png"
+ <p align="center">
+ One refinement level for a tri-quadratic displacement formulation.
+ </p>
+ </td>
+ </tr>
+
+ <tr>
+ <td align="center">
+ @image html "Q1P0_Ref_4.png"
+ <p align="center">
+ Four refinement levels for a tri-linear displacement formulation.
+ </p>
+ </td>
+ <td align="center">
+ @image html "Q2P1_Ref_3.png"
+ <p align="center">
+ Three refinement levels for a tri-quadratic displacement formulation.
+ </p>
+ </td>
+ </tr>
+</table>
+
+<a name="extensions"></a>
+<h3>Possibilities for extensions</h3>
+
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