The Department of Energy-funded scientific paper "Co-simulation of building energy and control systems with the Building Controls Virtual Test Bed," authored by Michael Wetter, which appeared in the Journal of Building Performance Simulation, Vol. 4(3), 2011, was in 2012 the journal's most cited paper. Over the past three years, another DOE-funded publication "Modelica-based modelling and simulation to support research and development in building energy and control systems," also authored by Michael Wetter, is the second most cited article. It appeared in vol. 2(2), 2009.