@TechReport{economics.dp.2010-12,
 author = {Coad, Alex },
 title = {Investigating the Exponential Age Distribution of Firms},
 type = {Economics Discussion Paper},
 institution = {Kiel Institute for the World Economy},
 year = {2010},
 number = {2010-12},
 url = {http://www.economics-ejournal.org/economics/discussionpapers/2010-12}
}