Rifqi Ramadhan, I Made Satria Ambara, Taufiq Agung Kurniawan, Fitri Kartiasih, Raden Muaz Munim, and Somethea Buoy. “Estimating Economic Activity Using Geospatial Big Data in East Java, Indonesia: Relative Spatial GDP Index Approach”. Jurnal Aplikasi Statistika & Komputasi Statistik, vol. 17, no. 2, Dec. 2025, pp. 189-10, doi:10.34123/jurnalasks.v17i2.856.