Gubanov, V. O.; Naumenko, A. P.; Dotsenko, I. S.; Sabov, M. M.; Gryn, D. V.; Bulavin, L. A. Fine Spin-Dependent Splitting of Electronic Excitations and Their Dispersion in Single-Layer Graphene and Graphite. Ukr. J. Phys. 2020, 65, 625.