27</th>
      <td>Ivaldi_2018</td>
      <td>Competitive impact of the air ticket levy on the European airline market</td>
      <td>Ivaldi, Marc; Toru-Delibaşı, Tuba</td>
      <td>2018</td>
      <td>2018-11-15</td>
      <td>PMC</td>
      <td>N</td>
      <td><a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7126679" target="_blank">PMC7126679</a></td>
      <td></td>
      <td><a href="https://doi.org/10.1016/j.tranpol.2018.02.010" target="_blank">10.1016/j.tranpol.2018.02.010</a></td>
      <td>