Yu, Pao-Ta, Yuan-Hsun Liao, Ming-Hsiang Su, Po-Jen Cheng, and Chun-Hsuan Pai. 2012. “A Rapid Auto-Indexing Technology for Designing Readable E-Learning Content”. The International Review of Research in Open and Distributed Learning 13 (5), 20-38. https://doi.org/10.19173/irrodl.v13i5.1246.