ANISAUL WAKHIDAH, R.; SUMARLINDA, S.; PURWANTO, E. WEB-BASED CORRESPONDENCE INFORMATION SYSTEM WITH SMART NUMBERING AND WHATSAPP NOTIFICATION AT THE SURAKARTA CITY EDUCATION OFFICE. Simtek : jurnal sistem informasi dan teknik komputer, [S. l.], v. 11, n. 2, p. 328–336, 2026. DOI: 10.51876/simtek.v11i2.1791. Disponível em: https://ejournal.catursakti.ac.id/index.php/simtek/article/view/1791. Acesso em: 7 oct. 2026.