“ANALISIS SISA HASIL USAHA (SHU) KOPERASI DI INDONESIA MENGGUNAKAN REGRESI DATA PANEL”. E-Jurnal Matematika 15, no. 3 (August 5, 2026): 200–205. Accessed September 24, 2026. https://ejournal3.unud.ac.id/index.php/mtk/article/view/3720.