“DINAMIKA PERKEMBANGAN HIV AIDS DI SULAWESI UTARA MENGGUNAKAN MODEL PERSAMAAN DIFERENSIAL NONLINEAR SIR (SUSCEPTIBLE, INFECTIOUS AND RECOVERED)”. 2013. Jurnal Ilmiah Sains 13 (1): 9-14. https://doi.org/10.35799/jis.13.1.2013.1802.