The paper describing ePMV is officially online. It made the cover of the March 2011 issue!
Graham T. Johnson* and Ludovic Autin*, David S. Goodsell, Michel F. Sanner, Arthur J. Olson. ePMV Embeds Molecular Modeling into Professional Animation Software Environments. Structure, Volume 19, Issue 3, 293-303, 9 March 2011
Additional information can be found here.