Muhafzan, Muhafzan, Indah Monika, Ahmad Iqbal Baqi, Narwen Narwen, and Zulakmal Zulakmal. 2026. “LOCAL STABILITY OF THE SEIQR EPIDEMIC MODEL APPLIED TO COVID-19 SPREAD CASES”. Jurnal Matematika UNAND 15 (1):123-31. https://doi.org/10.25077/jmua.15.1.123-131.2026.