 Panel Data Exploration</a>
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    <li>
      <a href="articles/customize_ExPanD.html">Customize ExPanD</a>
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      <a href="articles/ExPanD_notebook.html">Using the ExPanD Notebook function</a>
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    <li class="dropdown-header">'ExPanDaR' functions</li>
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      <a href="articles/ExPanDaR-functions.html">Using the functions of the 'ExPanDaR' package</a>
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  </ul>
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      </ul>

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