[1]VelocityMR: https://indiaeducationdiary.in/velocity-mr-study-shows-72-indians-prefer-online-e-learning-mode-of-training-than-traditional-classroom-training/

[2] Sohn, B. (2005). E-learning and primary and secondary education in Korea.  KERIS Korea Education & Research Information Service, 2(3), 6-9.

[3] Khan, B. H. (2005). Managing e-learning: Design, delivery, implementation and evaluation. Hershey, PA: Information Science Publishing. 

[4] Lai, K., Pratt, K., & Grant, A. (2003). State of the art and trends in distance, flexible, and open learning: A review of the literature. Dunedin, New Zealand: School of Education, University of Otago.

[5] K. Colchester, H. Hagras, D. Alghazzawi, and G. Aldabbagh, “A Survey of Artificial Intelligence Techniques Employed for Adaptive Educational Systems within E-Learning Platforms,” J. Artif. Intell. Soft Comput. Res., vol. 7, no. 1, pp. 47–64, 2016.

[6] M. G. Moore, “Editorial: Three types of interaction,” Am. J. Distance Educ., vol. 3, no. 2, pp. 1–7, Jan. 1989

[7] M. A. Tadlaoui, S. Aammou, M. Khaldi, and R. N. Carvalho, “Learner Modeling in Adaptive Educational Systems: A Comparative Study,” Int. J. Mod. Educ. Comput. Sci., vol. 8, no. 3, p. 1, Mar. 2016. 

Department of Computer Science & Engineering, Amity University Haryana, Gurgaon, India (email: udit.manav92@gmail.com)