When Friends Argue: Investigating Argumentative Learning Processes in Facebook. - Dimitra Tsovaltzi; Christa S. C. Asterhan; Christine Greenhow; Raluca Judele; Thomas Puhl; Rakheli Hever; Thor Gibbons; Melissa M. Menzer; Baruch B. Schwarz; Armin Weinberger; Douglas B. Clark (ICLS, 2014)