Tl bcc LJ_ElliottAkerson_2015_Universal__MO_959249795837_003 3.1919952631 Optimization terminated successfully. Current function value: -9.187148 Iterations: 75 Function evaluations: 196 C11 = 321.049704 +/- 0.007336 GPa C12 = 391.985622 +/- 0.005187 GPa C44 = 392.417846 +/- 0.001834 GPa B = 368.340316 +/- 0.004235 GPa