%0 Report %A Vi H Rapp %A Albert Pastor-Perez %A Brett C Singer %A Craig P Wray %D 2013 %R 10.1080/10789669.2013.771948 %T Predicting Backdrafting and Spillage for Natural-Draft Gas Combustion Appliances: Validating VENT-II %2 LBNL-6193E %8 04/2013