 class="nav-link dropdown-toggle" type="button" id="dropdown-articles" data-bs-toggle="dropdown" aria-expanded="false" aria-haspopup="true">Articles</button>
  <ul class="dropdown-menu" aria-labelledby="dropdown-articles"><li><a class="dropdown-item" href="articles/CO69.html">“The Problem of Spatial Autocorrelation:” forty years on</a></li>
    <li><a class="dropdown-item" href="articles/nb_sf.html">Creating Neighbours using sf objects</a></li>
    <li><a class="dropdown-item" href="articles/nb.html">Cr