CHEN, Ruifang; ZHAO, Xianhe; LI, Rui. On $\mathcal{M}$-normal embedded subgroups and the structure of finite groups. Mathematica Scandinavica, Berkeley, CA, United States, v. 127, n. 2, p. 243–251, 2021. DOI: 10.7146/math.scand.a-126034. Disponível em: https://journals.msp.org/mscand/article/view/148. Acesso em: 24 jul. 2026.