@article{economics2009-20,
 author = { Gary Clyde  Hufbauer and  Jisun  Kim},
 title = {Climate Policy Options and the World Trade Organization},
 journal = {Economics: The Open-Access, Open-Assessment E-Journal},
 volume = {3},
 year = {2009},
 number = {2009-20},
 url = {http://www.economics-ejournal.org/economics/discussionpapers/2009-20}
}