Kreshna Gopal Tod D. Romo James C. Sacchettini Thomas R. Ioerger Evaluation of Geometric & Probabilistic Distance Measures To Retrieve Electron Density Patterns for Protein Structure Determination. 427-432 2004 conf/icai/2004-1 IC-AI db/conf/icai/icai2004-1.html#GopalRSI04