M. Ibraheem, H. hassan, S. Youssef, M. Selmey, and N. Saad, “Determinants of life insurance market share: a comprehensive panel econometric and machine learning analysis of seven industrialized countries (2005-2022)”, Stat., optim. inf. comput., vol. 16, no. 2, pp. 1219–1242, Jun. 2026.