SUN, Jian; YU, Haoran. A note on $\mathcal{M}$-normal embedded subgroups of finite groups. Mathematica Scandinavica, Berkeley, CA, United States, v. 129, n. 3, 2023. DOI: 10.7146/math.scand.a-137337. Disponível em: https://journals.msp.org/mscand/article/view/76. Acesso em: 24 jul. 2026.