LU, Siqi. The Definition of the Crime of Helping Letter in Payment and Settlement: Social Factor Analysis. International Journal of Social Sciences and Public Administration, U.K., v. 4, n. 1, p. 22–26, 2024. DOI: 10.62051/ijsspa.v4n1.04. Disponível em: https://wepub.org/index.php/IJSSPA/article/view/3162. Acesso em: 18 jul. 2026.