How Useful Is Twitter for Learning in Massive Communities? An Analysis of Two MOOCs | Pédagogie & Technologie | Scoop.it
Published in Twitter & Society, 2013 (http://www.peterlang.com/index.cfm?event=cmp.ccc.seitenstruktur.detailseiten&seitentyp=produkt&pk=71177&concordeid=312169)

Via Susanna Sancassani, Deborah Arnold