Pb bcc Morse_Shifted_GirifalcoWeizer_1959MedCutoff_Pb__MO_958424213898_002 3.92615813017 Optimization terminated successfully. Current function value: -3.983890 Iterations: 70 Function evaluations: 180 C11 = 43.425579 +/- 0.007336 GPa C12 = 42.243900 +/- 0.005187 GPa C44 = 42.343771 +/- 0.001834 GPa B = 42.637793 +/- 0.004235 GPa