Putra, M., Djenal, D. P., Suseno, F. G. and Sandro, T. (2021) “Rancang Bangun Sistem Monitoring Tinggi Muka Air di Wilayah Danau Toba”, Proceedings Series on Physical & Formal Sciences, 1, pp. 27–31. doi: 10.30595/pspfs.v1i.129.