Tarigan, Masmur, and Adven Kristianata. “Scheduler Team Meeting Application Based on Mobile by Using Push Notification: Aplikasi Scheduler Team Meeting Berbasis Mobile Dengan Menggunakan Push Notification”. Jurnal RESTI (Rekayasa Sistem Dan Teknologi Informasi), vol. 4, no. 3, June 2020, pp. 521-30, https://doi.org/10.29207/resti.v4i3.1864.