Rianti, Dwi, Utriweni Mukhaiyar, & Lutfi Mardianto. " Analisis Sistem Antrian pada Pelayanan Help Desk UPT TIK Institut Teknologi Sumatera Menggunakan Teori Antrian." Indonesian Journal of Applied Mathematics [Online], 2.1 (2022): 9-16. Web. 3 May. 2024