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 <p id="slipcover">The algorithm for Metropolis/Hastings sampling is described in:</p>
 <ul>
 <li>
+Davide Nitti, Tinne De Laet, and Luc De Raedt. Probabilistic logic programming for hybrid relational domains. Machine Learning 103(3), 407-449, 2016.
+[&nbsp;<a href="http://link.springer.com/article/10.1007/s10994-016-5558-8/fulltext.html">.pdf</a>&nbsp;]
+</li>
+</ul>
+<p id="slipcover">The algorithm for likelihood weighting is described in:</p>
+<ul>
+<li>
 Arun Nampally and C. R. Ramakrishnan. 
 Adaptive MCMC-Based Inference in Probabilistic Logic Programs.
 <em>arXiv preprint arXiv:1403.6036</em>, 2014.