TRUDI KOMANSILAN; JOHAN REIMON BATMETAN; SONDY C KUMAJAS. An Activity-Oriented Conceptual Framework for Mobile Learning Database Educational Classroom. Technium: Romanian Journal of Applied Sciences and Technology, Constanta, Romania, v. 17, n. 1, p. 413–420, 2023. DOI: 10.47577/technium.v17i.10117. Disponível em: https://www.techniumscience.com/index.php/technium/article/view/10117. Acesso em: 17 apr. 2026.