@conference {2642, title = {Reducing Building Operational Cost Through Environmental Effectiveness Ratios}, booktitle = {Building Simulation 2005 IBPSA International Conference}, year = {2005}, month = {08/2005}, address = {Montreal, Canada}, author = {James O{\textquoteright}Donnell and Elmer Morrissey and Marcus Keane and Brian {\'O} Gallach{\'o}ir} }