Priyatna, B., Lia Hananto, A., & Istambul, R. (2020). ZFONE SECURITY ANALYSIS OF VIDEO CALL SERVICE USING GENERAL NEWORK DESIGN PROCESS METHOD(GNDP). International Journal of Psychosocial Rehabilitation, 24(1), 8247-8254. https://doi.org/10.61841/e2fwpj74