@TechReport{economics.dp.2007-27,
 author = {Haertel, Thomas  and Lucke, Bernd},
 title = {New Evidence on News-Driven Business Cycles},
 type = {Economics Discussion Paper},
 institution = {Kiel Institute for the World Economy},
 year = {2007},
 number = {2007-27},
 url = {http://www.economics-ejournal.org/economics/discussionpapers/2007-27}
}