Knyagina, . V. N., & Tyutyanov, V. N. (2014). Factorizations of Finite Groups into $r$-Soluble Subgroups with Given Embeddings. Ukrains’kyi Matematychnyi Zhurnal, 66(10), 1431–1435. https://umj.imath.kiev.ua/index.php/umj/article/view/2235