e of full and banded
      jacobians, and of user-generated, or forward or central difference
      approximated jacobian matrices.  The program seeks limit points in LAMBDA.
      <ul>
        <li>
          <a href = "pitcon66_prb3.f">pitcon66_prb3.f</a>,
          a sample calling program.
        </li>
        <li>
          <a href = "pitcon66_prb3.sh">pitcon66_prb3.sh</a>,
          commands to compile and run the sample program.
        </li>
        <li>
          <a href = "pitcon66_prb3_output.txt