@inproceedings{coetzee-las2014,
 author = {Coetzee, Derrick and Fox, Armando and Hearst, Marti A. and Hartmann, Bj\"{o}rn},
 title = {Chatrooms in MOOCs: All talk and no action},
 booktitle = {Proceedings of the ACM 2014 Conference on Learning at Scale},
 series = {LAS '14},
 year = {2014},
 location = {Atlanta, GA, USA},
 numpages = {10},
 url = {http://dx.doi.org/10.1145/2556325.2566242},
 doi = {10.1145/2556325.2566242},
 acmid = {2566242},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {Massive open online course, MOOC, synchronous chart, chatroom, retention, participation, experiment},
}