E. I. Khukhro, On solubility of groups with bounded centralizer chains, Glasgow Math, J. 51 (2009), 49–54.
E. I. Khukhro, Lie rings with finite cyclic grading that have many commuting components, Siberian Electron. Math. Rep. 6 (2009), 243–250. (Russian, electronic).
E. I. Khukhro, A. A. Klyachko, N. Yu. Makarenko, and Yu. B. Mel’nikova, Invariance under automorphisms and laws, Bull. London Math. Soc. 41 (2009), 804–816.