1.
Thormann J, Gable S, Fidalgo PS, Blakeslee G. Interaction, critical thinking, and social network analysis (SNA) in online courses. IRRODL [Internet]. 2013Jul.5 [cited 2019Nov.21];14(3):294-18. Available from: http://www.irrodl.org/index.php/irrodl/article/view/1306