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    <a class="dropdown-item" href="../articles/link2GI1.html">Link GI to R</a>
    <a class="dropdown-item" href="../articles/link2GI2.html">Basic usage of link2GI</a>
    <a class="dropdown-item" href="../articles/link2GI3.html">GRASS application for real world big data</a>
    <a class="dropdown-item" href="../articles/link2GI4.html">OTB Wrappe