<p>I would like to suggest: <a href="http://psychology3.anu.edu.au/people/smithson/details/betareg/Smithson_Verkuilen06.pdf" rel="nofollow">A Better Lemon Squeezer: Maximum Likelihood Regression with Beta-Distributed Dependent Variables</a></p>

<p>This will be especially useful for DVs that have ceiling or floor effects or that are bounded, it is also useful when the variance may differ as a result of the IVs. But the paper gets kind of technical. </p>
