Lyman, F. N., and T. D. Lukashova. “Non-Periodic Locally Soluble Groups With Non-Dedekind Locally Nilpotent Norm of Decomposable Subgroups”. Ukrains’kyi Matematychnyi Zhurnal, vol. 71, no. 11, Feb. 2026, pp. 1519-28, https://doi.org/10.3842/umzh.v71i11.1532.