RATNA SARI, Eminugroho. KESTABILAN GLOBAL BEBAS PENYAKITFLU SINGAPURA (Hand, Foot and Mouth Disease)BERDASARKAN MODEL SEIRS. PYTHAGORAS Jurnal Matematika dan Pendidikan Matematika, [S. l.], v. 7, n. 1, 2015. DOI: 10.21831/pg.v7i1.2833. Disponível em: https://journal.uny.ac.id/index.php/pythagoras/article/view/2833. Acesso em: 10 jul. 2025.