1. P. Grodzinski, Plastics 18, 312 (1953).
2. A. P. Ternovskii, V. P. Alekhin, M. Kh. Shorshorov, M. M. Khrushchev, and V. N. Skvortsov, Zavod. Lab. 39, 1242 (1973).
3. S. I. Bulychev and V. P. Alekhin, Testing of Materials by Continuous Depression of an Indenter (Mashinostroenie, Moscow, 1990) [in Russian].
4. Yu. I. Golovin, Nanoindentation and its Possibilities (Mashinostroenie, Moscow, 2009).
5. A. C. Fischer-Cripps, Nanoindentation (Springer, New York, 2011).