@inbook {3471, title = {Open Education Case Studies {\textendash} A Variety of Shades and Formats}, booktitle = {Openness and Education}, volume = {1}, number = {Advances in Digital Education and Lifelong Learning}, year = {2013}, publisher = {Emerald Group Publishing Limited}, organization = {Emerald Group Publishing Limited}, chapter = {3}, address = {Bingley, United Kingdom}, keywords = {OER}, author = {Martin Rehm and Ad Notten and Ruediger Glott and Petra Hagemann and Balthas Seibold and Lex Bijlsma and Ioannis Stamelos and Pantelis M. Papadopoulos} }