Added HBS example model from EDCC2018 paper
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 		<h3>CHESS model examples</h3>
-		<li><a href="http://download.polarsys.org/chess/models/ProtectedOperationSample.zip">Producer-Consumer</li></a>
-		<li><a href="http://download.polarsys.org/chess/models/IndustrialDrive.zip">IndustrialDrive</li></a></br>
-		<li><a href="http://download.polarsys.org/chess/models/WBS.zip">Wheel Braking System (example about contract-based design)</li></a></br>
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+		<li><a href="http://download.polarsys.org/chess/models/ProtectedOperationSample.zip">Producer-Consumer</a></li>
+		<li><a href="http://download.polarsys.org/chess/models/IndustrialDrive.zip">IndustrialDrive</a></li>
+		<li><a href="http://download.polarsys.org/chess/models/WBS.zip">Wheel Braking System (example about contract-based design)</a></li>
+		<li><a href="http://download.polarsys.org/chess/models/HBS.zip" title="Model from «L. Bressan, A. L. de Oliveira, L. Montecchi, B. Gallina. A Systematic Process for Applying the CHESS Methodology in the Creation of Certifiable Evidence. In: 14th European Dependable Computing Conference (EDCC 2018). Iasi, Romania, September 10-14, 2018»">Hybrid Braking System (example about state-based analysis)</a></li></br>
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