Add reference in index.html (#289)

Add reference to my Master's thesis using the GH Archive as data source.

index.html

@@ -200,6 +200,7 @@ <h2 id="resources"><a href="#resources">Research, visualizations, talks...</a></
             <li><a href="https://ossinsight.io/">OSS Insight</a> - Open Source Software Insights - analysis, comparison, trends, rankings of open source software, based on TiDB Cloud</li>
             <li><a href="https://app.snowflake.com/marketplace/listing/GZTSZAS2KD1/cybersyn-inc-github-archive-events">GH Archive is available on Snowflake Marketplace</a></li>
             <li>Datasets Guide: <a href="https://soulteary.com/2023/02/23/exploring-github-open-datasets.html">How to get the Complete GH Archive Dataset quickly.</a></li>
+            <li><a href="https://doi.org/10.3929/ethz-b-000612634">Master's thesis</a> analyzing developers' intentions to make open-source software GDPR compliant</li>
           </ul>
 
           <p>Have a cool project that should be on this list? <a href="https://github.com/igrigorik/gharchive.org/tree/gh-pages">Send a pull request</a>!</p>