Kang, In Gu. “Heterogeneity of Learners’ Behavioral Patterns of Watching Videos and Completing Assessments in Massive Open Online Courses (MOOCs): A Latent Class Analysis”. The International Review of Research in Open and Distributed Learning, vol. 21, no. 4, June 2020, pp. 222-37, doi:10.19173/irrodl.v21i4.4645.