Shinta Palupi, Gunawan, Ririn Kusdyawati, Richki Hardi, and Rana Zabrina. 2024. “Predicting Financial Default Risks: A Machine Learning Approach Using Smartphone Data”. Matrix : Jurnal Manajemen Teknologi Dan Informatika 14 (3):107-18. https://ojs2.pnb.ac.id/index.php/MATRIX/article/view/1917.