Evaluation of the ejournal “eleed” (e-learning and education) Roos Martin Postel Manfred Krinke Jens Häßler Holger e-journal e-learning eleed evaluation 370 periodical academic journal eleed 3 1 2007 1860-7470 urn:nbn:de:0009-5-10876 http://nbn-resolving.de/urn:nbn:de:0009-5-10876 roos2007