• Student’s behavior in free learning environment and formal education systemKukk, VelloLearning technology for education in Cloud : MOOC and Big Data : third International Workshop, LTEC 2014, Santiago, Chile, September 2-5, 2014 : proceedings2014 / p. 187-194 https://doi.org/10.1007/978-3-319-10671-7_19 https://www.scopus.com/sourceid/17700155007 https://www.scopus.com/record/display.uri?eid=2-s2.0-84907351464&origin=inward&txGid=cabd3b100c730eff09a96ce949d224c1