@TechReport{economics.dp.2007-44,
 author = {Tol, Richard S. J.},
 title = {The Social Cost of Carbon: Trends, Outliers and Catastrophes},
 type = {Economics Discussion Paper},
 institution = {Kiel Institute for the World Economy},
 year = {2007},
 number = {2007-44},
 url = {http://www.economics-ejournal.org/economics/discussionpapers/2007-44}
}