1. Gleiter, H., Acta Mater., 2000, no. 48, p. 1.
2. Gusev, A.I., Nanokristallicheskie materialy: poluchenie i svoistva (Nanocrystalline Materials: Synthesis and Properties), Yekaterinburg: Izd-vo UrO RAN. 1998.
3. Valiev, R.Z. and Aleksandrov, I.V., Nanostrukturnye materialy, poluchennye intensivnoi plasticheskoi deformatsiei (Nanostructured Materials Obtained by Severe Plastic Deformation), Moscow: Logos, 2000.
4. Beigel’zimer, Ya.E., Varyukhin, V.N., Orlov, D.V., et al., Vintovaya ekstruziya—protsess nakopleniya deformatsii (Screw Extrusion As a Process of Accumulation of Strains), Donetsk: Izd-vo TEAN, 2003.
5. Estrin, E.I., in Problemy metallovedeniya i fiziki metallov (Problems of Metal Science and Physics of Metals), Kurdyumov, G.V., Ed., Moscow: Metallurgiya, 1978, p. 28.