On (σ,τ)-Derivations and Commutativity of Prime and Semi prime Γ-rings. Baghdad Science Journal, Iraq, Baghdad, v. 13, n. 1, p. 0198, 2016. DOI: 10.21123/bsj.2016.13.1.0198. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2155.. Acesso em: 28 apr. 2024.