itcon66.f">pitcon66.f</a>, the source code.
        </li>
        <li>
          <a href = "pitcon66_sub.f">pitcon66_sub.f</a>, linear algebra
          and other subsidiary routines.
        </li>
        <li>
          <a href = "pitcon66.sh">pitcon66.sh</a>,
          commands to compile the source code.
        </li>
      </ul>
    </p>

    <h3 align = "center">
      Examples and Tests:
    </h3>

    <p>
      <b>PITCON66_PRB1</b> sets up the Freudenstein Roth function.
      There are 2 equations, 