F. M. Haggag, Field Indentation Microprobe for Structural Integrity Evaluation, U.S. Patent No, vol.4852397, 1989.

X. Chen, N. Ogasawara, M. Zhao, and N. Chiba, On the uniqueness of measuring elastoplastic properties from indentation: The indistinguishable mystical materials, Journal of the Mechanics and Physics of Solids, vol.55, issue.8, p.1618, 2007.
DOI : 10.1016/j.jmps.2007.01.010

J. Luo and J. Lin, A study on the determination of plastic properties of metals by instrumented indentation using two sharp indenters, International Journal of Solids and Structures, vol.44, issue.18-19, p.5803, 2007.
DOI : 10.1016/j.ijsolstr.2007.01.029

M. Dao, N. Chollacoop, K. J. Van-vliet, T. A. Venkatesh, and S. Suresh, Computational modeling of the forward and reverse problems in instrumented sharp indentation, Acta Materialia, vol.49, issue.19, p.3899, 2001.
DOI : 10.1016/S1359-6454(01)00295-6

J. A. Nelder and R. Mead, A Simplex Method for Function Minimization, The Computer Journal, vol.7, issue.4, p.308, 1965.
DOI : 10.1093/comjnl/7.4.308