iagrams -
          a study of a fundamental geometric data structure,<br>
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        </li>
        <li>
          John Burkardt, Max Gunzburger, Janet Peterson, Rebecca Brannon,<br>
          User Manual and Supporting Information for Library of Codes
          for Centroidal Voronoi Placement and Associated Zeroth,
          First, and Second Moment Determination,<br>
          Sandia National Laboratories Tech