BUWANA R. MEMBANGUN CUSTOMER RELATIONSHIP MANAGEMENT (CRM) MENGGUNAKAN SMS CENTER BERBASIS SMS GATEWAY MENGGUNAKAN PHP (STUDI KASUS RSI SULTAN AGUNG SEMARANG). Information Technology and Telematics [Internet]. 14Apr.2016 [cited 23Nov.2024];6(1). Available from: https://www.unisbank.ac.id/ojs/index.php/fti3/article/view/3867