R. S. M. Asmoro, A. Y. P. Wardoyo, D. Anggraeni, M. Pramundhitya, A. A. Widhowati, and E. T. P. Adi, “A Design of Ammonia Concentration Monitoring System Using Radio Communication”, J. of App. Sci. & Adv. Eng., vol. 2, no. 1, pp. 23–26, Mar. 2024.