Enter a species  (e.g. Al, Fe): He
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): 5.446350638973406e-11, 8.894030781340314e-11

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -0.015690
         Iterations: 75
         Function evaluations: 197

Finished calculation

C11 = 174.9493884090085 GPa
C12 = 46.82215868653912 GPa
  B = 89.53123526069557 GPa