@book{Glocker2011, author = {Glocker, Daniela and Steiner, Viktor}, year = {2011}, language = {eng}, copyright = {http://www.fu-berlin.de/sites/refubium/rechtliches/Nutzungsbedingungen}, title = {Returns to education across Europe}, url = "http://dx.doi.org/10.17169/FUDOCS_document_000000011805", }