OER Knowledge CloudJournal ArticleLearning potentials and educational challenges of massive open online courses (MOOCs) in lifelong learningLearning potentials and educational challenges of massive open online courses (MOOCs) in lifelong learningBuhl, MieAndreasen, Lars Birch20182018/04Springer NetherlandsInternational Review of Education642151-160Denmark10.1007/s11159-018-9716-z1573-0638yesMOOCMOOC pedagogyBuhl-Andreasen2018_Article_LearningPotentialsAndEducation.pdfNetherlands, Denmark, Europe