@inbook{2a83c6cd641744a4bc7174b03fa89997,
title = "Energy challenges",
keywords = "Samfund og systemer, Ris{\o}-R-1612(EN), Ris{\o}-R-1612",
author = "Morthorst, {Poul Erik} and J. Henningsen",
year = "2007",
language = "English",
isbn = "978-87-550-3611-6",
series = "Denmark. Forskningscenter Risoe. Risoe-R",
number = "1612(EN)",
pages = "7--12",
editor = "H. Larsen and {S{\o}nderberg Petersen}, L.",
booktitle = "Ris{\o} energy report 6. Future options for energy technologies",
publisher = "Ris{\o} National Laboratory",
}