YOUSSEF , Ahmed Hassen; ABONAZEL, Mohamed Reda; AHMED, Elsayed G. Robust M Estimation for Poisson Panel Data Model with Fixed Effects: Method, Algorithm, Simulation, and Application. Statistics, Optimization & Information Computing, [S. l.], v. 12, n. 5, p. 1292–1305, 2024. DOI: 10.19139/soic-2310-5070-1996. Disponível em: https://iapress.org/index.php/soic/article/view/1996. Acesso em: 25 may. 2026.