Na bcc Morse_Shifted_GirifalcoWeizer_1959LowCutoff_Na__MO_707981543254_004 4.427487522363663
Optimization terminated successfully.
         Current function value: -2.000887
         Iterations: 71
         Function evaluations: 188

C11 =     7.670090 +/-     0.007336 GPa
C12 =     5.577416 +/-     0.005187 GPa
C44 =     5.628241 +/-     0.001834 GPa
B   =     6.274974 +/-     0.004235 GPa