r Panel Data Exploration</a>
    <a class="dropdown-item" href="../articles/customize_ExPanD.html">Customize ExPanD</a>
    <a class="dropdown-item" href="../articles/ExPanD_notebook.html">Using the ExPanD Notebook function</a>
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    <h6 class="dropdown-header" data-toc-skip>'ExPanDaR' functions</h6>
    <a class="dropdown-item" href="../articles/ExPanDaR-functions.html">Using the functions of the 'ExPanDaR' package</a>
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      </ul><form class="form-inlin