O. F. Damayanti, I. Darti, A. Suryanto, N. Shofianah, and T. Trisilowati, “DYNAMICAL ANALYSIS OF TWO LOAN CATEGORIES IN A BANKING SYSTEM WITH NON-PERFORMING LOANS”, BAREKENG: J. Math. & App., vol. 20, no. 4, pp. 3223-3240, Aug. 2026.