 aria-label="anchor" href="#references"></a></h2>
    <p>Gregory Belenky, Nancy J. Wesensten, David R. Thorne,
  Maria L. Thomas, Helen C. Sing, Daniel P. Redmond,
  Michael B. Russo and Thomas J. Balkin (2003) Patterns of
  performance degradation and restoration during sleep
  restriction and subsequent recovery: a sleep
  dose-response study. <em>Journal of Sleep Research</em>
  <b>12</b>, 1–12.</p>
    </div>

    <div class="section level2">
    <h2 id="ref-examples">Examples<a class="anchor" aria-la