triangle_unit_o06.m</a>, 
          returns a 6 point quadrature rule for the unit triangle.
        </li>
        <li>
          <a href = "triangle_unit_o06b.m">triangle_unit_o06b.m</a>, 
          returns a 6 point quadrature rule for the unit triangle.
        </li>
        <li>
          <a href = "triangle_unit_o07.m">triangle_unit_o07.m</a>, 
          returns a 7 point quadrature rule for the unit triangle.
        </li>
        <li>
          <a href = "triangle_unit_o12.m">triangle_unit_o12.m</a>,