TY - RPRT U1 - Forschungsbericht A1 - Bierwirth, Anja A1 - Thomas, Stefan T1 - Energy sufficiency in buildings : concept paper Y1 - 2019 SP - 48 S1 - 48 PB - European Council for an Energy Efficient Economy CY - Stockholm PB - European Council for an Energy Efficient Economy CY - Stockholm ER -