Guo, J., L. Miao, and Jiajia Zhang. 2014. “On Nearly <em class="a-Plus-plus">ℳ</Em&gt;-Supplemented Subgroups of Finite Groups”. Ukrains’kyi Matematychnyi Zhurnal 66 (1), 63–70. https://umj.imath.kiev.ua/index.php/umj/article/view/2111.