Nugraheni, B. S. D., A. Wijiastuti, and P. Pamuji. “Development of an Arduino- and Internet of Things (IoT)-Based Early Warning Bell System for Bullying Against Autistic Children”. Journal of Mathematics Instruction, Social Research and Opinion, vol. 5, no. 1, Jan. 2026, pp. 121 -, doi:10.58421/misro.v5i1.1025.