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 May 6, 2024. https://rivista-statistica.unibo.it/article/view/8538.