Drozd, Y.A. and Plakosh А.І. 2021. Chernikov 2-groups with the Kleinian top and totally reducible bottoms. Ukrains’kyi Matematychnyi Zhurnal. 73, 7 (Jul. 2021), 1005 - 1008. DOI:https://doi.org/10.37863/umzh.v73i7.6552.