Isnaini, Bayutama, Isnandar Slamet, Winita Sulandari, and Husna Afanyn Khoirunissa. “Exploring Spatial Nonstationarity in the Number of Motor Vehicles in East Java Using Robust Geographically Weighted Regression With an MM-Estimator”. PYTHAGORAS Jurnal Matematika dan Pendidikan Matematika 20, no. 2 (January 30, 2026). Accessed February 7, 2026. https://journal.uny.ac.id/index.php/pythagoras/article/view/90866.