OLIVEIRA, A. A. de. Code complexity: an empirical study based on the index of internal effort. Revista Principia, [S. l.], v. 63, 2026. DOI: 10.18265/2447-9187a2026id9190. Disponível em: https://periodicos.ifpb.edu.br/index.php/principia/article/view/9190. Acesso em: 10 mar. 2026.