Enter a species  (e.g. Al, Fe): Ca
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: LJ_ElliottAkerson_2015_Universal__MO_959249795837_003
Enter hexagonal lattice constants 'a' and 'c' (m): 3.423418535382535e-10, 5.590530545550643e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -2.209657
         Iterations: 72
         Function evaluations: 189

Finished calculation

C11 = 99.20976540513902 GPa
C12 = 26.551767833510613 GPa
  B = 50.77110035738674 GPa