1. D. Leeb: New dynamic method for hardness testing of metallic materials, VDI-Bericht Nr. 308 (1978), S. 123–128.
2. D. Tabor: The Hardness of Metals, Oxford (1951), S. 116f.
3. V. Varnello: Izmerenie tverdosti metallov, Moskva (1965), S. 116f.
4. M. Kompatscher: Equotip – Rebound Hardness Testing After D. Leeb, Hardmeko 2004, 11–12 November 2004, Washington, D.C., USA.
5. ASTM A 956-02, Standard Test Method for Leeb Hardness Testing of Steel Products.