Hoffman, Ian M, Megan A Billingsley, Steven R Schiller, Charles A Goldman, and Elizabeth Stuart. "Energy Efficiency Program Typology and Data Metrics: Enabling Multi-State Analyses Through the Use of Common Terminology." 2013.Report PDF
Hoffman, Ian M, Mark Zimring, and Steven R Schiller. "Assessing Natural Gas Energy Efficiency Programs in a Low-Price Environment." 2013.PDF
Hoffman, Ian M, Merrian Borgeson, and Mark Zimring. "Implications of Cost Effectiveness Screening Practices in a Low Natural Gas Price Environment: Case Study of a Midwestern Residential Energy Upgrade Program." 2013.PDF