Refactoring, reengineering and evolution: paths to Geant4 uncertainty   quantification and performance improvement
  Ongoing investigations for the improvement of Geant4 accuracy and computational performance resulting by refactoring and reengineering parts of the code are discussed. Issues in refactoring that are specific to the domain of physics simulation are identified and their impact is elucidated. Preliminary quantitative results are reported. 
M. Batic, M. Begalli, M. Han, S. Hauf, G. Hoff, C. H. Kim, M. Kuster,   M. G. Pia, P. Saracco, H. Seo, G. Weidenspointner, A...
physics.comp-ph