Maintenance work on the ZORA databases is scheduled for Wednesday 22 May 2019 from 20:00-22:00. During this period ZORA and JDB will not be available. Thank you for your understanding.
Muller, A (2009). Sufficiency – does energy consumption become a moral issue? In: Broussous, C; Jover, C. Act! Innovate! Deliver! Reducing energy demand sustainably. Stockholm: ECEEE, 83-90.