Shalabh AGARWAL; Asoke NATH. Some Challenges in Designing and Implementing Learning Material for Ubiquitous E-learning Environment: A Descriptive Study. Recent Advances in Mathematical Research and Computer Science Vol. 8, [S. l.], p. 70–76, 2022. DOI: 10.9734/bpi/ramrcs/v8/3281E. Disponível em: https://stm.bookpi.org/RAMRCS-V8/article/view/5747. Acesso em: 4 jun. 2026.