@TechReport{economics.dp.2010-13,
 author = {Bjørnstad, Roger and Kalstad, Kjartan Øren},
 title = {Increased Price Markup from Union Coordination―OECD Panel Evidence},
 type = {Economics Discussion Paper},
 institution = {Kiel Institute for the World Economy},
 year = {2010},
 number = {2010-13},
 url = {http://www.economics-ejournal.org/economics/discussionpapers/2010-13}
}