Pirani, Elena, Maria Francesca Marino, and Alessandra Petrucci. “Correlates of Inter-Districts Migrations in Tanzania. A Gravity-Type Modeling Approach”. Statistica 79, no. 2 (January 1, 2019): 201–221. Accessed January 15, 2025. https://rivista-statistica.unibo.it/article/view/8538.