@misc{Adema_2010,
 author = {Adema, Janneke},
 date = {03.2010},
 year = {2010},
 title = {Overview of open access models for ebooks in the humanities and social sciences},
 url = {http://project.oapen.org/images/documents/openaccessmodels.pdf},
 urldate = {2015-05-16},
 institution = {{OAPEN Foundation}}
}