STOYANOVA, Petya. MODELING A MASS SERVICE SYSTEM FOR COVID-19 VACCINES. KNOWLEDGE - International Journal , [S. l.], v. 55, n. 4, p. 777–782, 2022. Disponível em: http://ikm.mk/ojs/index.php/kij/article/view/5829. Acesso em: 17 jul. 2024.