%0 Conference Proceedings %A Elmer Morrissey %A James O'Donnell %A Marcus Keane %A Vladimir Bazjanac %B SimBuild 2004, Building Sustainability and Performance Through Simulation %C Boulder, Colorado, USA %D 2004 %G eng %T Specification and Implementation of IFC-Based Performance Metrics to Support Building Life Cycle Assessment of Hybrid Energy Systems %8 08/2004