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         </div>
 
         <h2>About</h2>
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           <div class="span12">
             <p><b>L-Systems (short for Lindenmayer systems) are instances of a formal grammar that are used to model growth processes of plant deveopment. L-Systems can be used to generate realistic, natural-looking organisms in simulated environments.</b></p>
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             <p>Proper cartesian coordinates can then be generated from the result string, for processing in the front-end of your choice (WebGL, canvas or SVG).
             </p>
 
+            <h3>References</h3>
+            <ul>
+              <li><a href="http://algorithmicbotany.org/papers/#abop">The Algorithmic Beauty of Plants (Prusinkiewicz, Lindenmayer)</a></li>
+              <li><a href="http://books.google.com/books/about/Turtle_Geometry.html?id=3geYp44hJVcC">Turtle Geometry:
+The Computer As a Medium for Exploring Mathematics (Abelson, DiSessa)</a></li>
+            </ul>
+
             <p>L-Systems.JS was created by <a href="http://y3xz.com">Yuval Adam</a>.</p>
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         </div>
 
         <h2>Usage</h2>
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             <p>The canonical usage would be to create the L-System itself by defining the axiom string and the production rules, running the iteration, and generating the respective cartesian coordinates.</p>
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         </div>
 
         <h2>Playground</h2>
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         </div>
 
         <h2>Contribute!</h2>
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             <p>The L-Systems.JS project is in a very premature stage. Help us out by going over the <a href="https://github.com/yuvadm/lsys.js/issues">open project issues</a>.</p>