Na sc Morse_Shifted_GirifalcoWeizer_1959MedCutoff_Na__MO_636041334617_002 3.493632972240448
Optimization terminated successfully.
         Current function value: -0.990294
         Iterations: 91
         Function evaluations: 247

C11 =    21.458404 +/-     0.007336 GPa
C12 =    -2.669422 +/-     0.005187 GPa
C44 =    -2.669342 +/-     0.001834 GPa
B   =     5.373187 +/-     0.004235 GPa