, Atul S. Choudhary, Prof. Balkrushna K.Patil. “Online Interactive E-Learning Using Video Annotation”. International Journal on Recent and Innovation Trends in Computing and Communication 3, no. 6 (June 30, 2015): 3993–3996. Accessed October 5, 2025. https://www.ijritcc.org/index.php/ijritcc/article/view/4578.