@TechReport{economics.dp.2011-4,
 author = {Doan, Tinh },
 title = {Labour Market Returns to Higher Education in Vietnam},
 type = {Economics Discussion Paper},
 institution = {Kiel Institute for the World Economy},
 year = {2011},
 number = {2011-4},
 url = {http://www.economics-ejournal.org/economics/discussionpapers/2011-4}
}