LukovskyI., MakarovV. L., BoichukO. A., NikitinA. H., VasylykV. B., MazkoO. H., PlaksaS. A., and RomanyukA. S. “Oleksandr Mykolayovych Tymokha (to His 60th Birthday)”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 74, no. 8, Oct. 2022, pp. 1146 -48, doi:10.37863/umzh.v74i8.7249.