Improved core model of indentation and its application to measure diamond hardness - B. A. Galanov; Ju. V. Milman; S. A. Ivakhnenko; E. M. Suprun; S. I. Chugunova; A. A. Golubenko; V. N. Tkach; P. M. Litvin; I. V. Voskobojnik (Superhard Materials, 2016)