TrofimukA.A. and Gritsuk D.V. 2020. The derived $p$-length of a $p$-solvable group with bounded indices of Fitting $p$-subgroups in its normal closures. Ukrains’kyi Matematychnyi Zhurnal. 72, 3 (Mar. 2020), 366-370. DOI:https://doi.org/10.37863/umzh.v72i3.629.