TY JOUR TI Indentation of rough-surfaced spherical punch into elastic transversely isotropic half-space with functionally-graded coating KW contact KW elasticity KW spherical punch KW roughness KW coating KW inhomogeneity KW functionally-graded and layered materials. JO Vestnik of Don State Technical University AU Sadyrin, E.. AU Volkov, S.. AU Vasilev, A.. AU Litvinenko, A.N. PY 2016 IS 16 PB Don state technical University