@Article{economics.ja.2010-10,
 author = {Büttner, Thomas , Jacobebbinghaus, Peter , and Ludsteck, Johannes},
 title = {Occupational Upgrading and the Business Cycle in West Germany},
 journal = {Economics: The Open-Access, Open-Assessment E-Journal},
 volume = {4},
 year = {2010},
 number = {2010-10},
 doi = {10.5018/economics-ejournal.ja.2010-10}, 
 url = {http://dx.doi.org/10.5018/economics-ejournal.ja.2010-10}
}