pic_05.html#si2ewzkb">Pirie_2006</a></td>
      <td><a href="Topic_04.html#bipaceqy">Silverman_2009</a></td>
    </tr>
    <tr>
      <th id="wabctf34";>26</th>
      <td>Goetz_2004</td>
      <td>Air transport globalization, liberalization and sustainability: post-2001 policy dynamics in the United States and Europe</td>
      <td>Goetz, Andrew R.; Graham, Brian</td>
      <td>2004</td>
      <td>2004-12-31</td>
      <td>PMC</td>
      <td>N</td>
      <td><a href="https://www.ncbi.nlm.nih.gov/pmc/article