@book{com.arsdigita.cms.contenttypes.SciAuthor-id-13130052014,
 author = "Barbara Hupfer and Georg Spöttl",
 publisher = "Universität Bremen, Institut Technik und Bildung",
 title = "Qualifications Frameworks and the Underlying Concepts of Education and Work - Limits and Perspectives",
 year = "2014"}