Shalabh Agarwal and Asoke Nath. Some Challenges in Designing and Implementing Learning Material for Ubiquitous E-learning Environment: A Descriptive Study. RAMRCS-V8 [Internet]. 2022 Feb. 11 [cited 2026 Jun. 4];:70-6. Available from: https://stm.bookpi.org/RAMRCS-V8/article/view/5747