Mohamed Amine Chatti Matthias Jarke Theresia Devi Indriasari Marcus Specht NetLearn: Social Network Analysis and Visualizations for Learning. 310-324 2009 EC-TEL http://dx.doi.org/10.1007/978-3-642-04636-0_30 conf/ectel/2009 db/conf/ectel/ectel2009.html#ChattiJIS09