Supandi, Supandi, and Saifan Sidiq Abdullah. “MODEL PERSAMAAN DIFERENSIAL PADA INTERAKSI DUA POPULASI”. PRISMA, Prosiding Seminar Nasional Matematika (February 1, 2017): 632-640. Accessed December 16, 2025. https://journal.unnes.ac.id/sju/prisma/article/view/21548.