CLAY, J. R.; DOI, D. K. Near-Rings with Identity on Alternating Groups. MATHEMATICA SCANDINAVICA, [S. l.], v. 23, p. 54–56, 1968. DOI: 10.7146/math.scand.a-10896. Disponível em: https://www.mscand.dk/article/view/10896. Acesso em: 5 may. 2024.