YUDASRIL; BERLIAN SETIAWATY; I GUSTI PUTU PURNABA. Sifat Kemonotonan Barisan Trapezoid Sum dari Kelas Fungsi Nonkonveks dan Nonkonkaf. Limits: Journal of Mathematics and Its Applications, [S. l.], v. 19, n. 1, p. 49–63, 2022. Disponível em: https://journal.its.ac.id/index.php/limits/article/view/5346. Acesso em: 6 dec. 2025.