     </dl><dl><dt>

          <code><a href="summary.HeckmanGe.html">summary(<i>&lt;HeckmanGe&gt;</i>)</a></code>

        </dt>
        <dd>Summary of Generalized Heckman Model</dd>
      </dl><dl><dt>

          <code><a href="summary.HeckmanSK.html">summary(<i>&lt;HeckmanSK&gt;</i>)</a></code>

        </dt>
        <dd>Summary of Skew-Normal Heckman Model</dd>
      </dl><dl><dt>

          <code><a href="summary.HeckmantS.html">summary(<i>&lt;HeckmantS&gt;</i>)</a></code>

        </dt>
        <dd>Sum