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), pp. 107–118. doi: 10.31940/matrix.v14i3.107-118.