@article{9ec39ef4a89d4ee88a102800c311cce3,
title = "Analyzing the Impact of Using Optional Activities in Self-Regulated Learning",
keywords = "learning analytics, MOOCs, optional activities, self-regulated learning, Khan Academy",
author = "Ruiperez-Valiente, {Jose A.} and Mu{\~n}oz-Merino, {Pedro J.} and {Delgado Kloos}, Carlos and Katja Niemann and Maren Scheffel and Martin Wolpers",
year = "2016",
month = jan,
day = "19",
doi = "10.1109/TLT.2016.2518172",
language = "English",
volume = "9",
pages = "231--243",
journal = "IEEE Transactions on Learning Technologies",
issn = "1939-1382",
publisher = "IEEE",
number = "3",
}