Enter a species  (e.g. Al, Fe): Ge
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): 2.334154956984373e-10, 3.811735114651481e-10

Calculating isothermal bulk modulus

Optimization terminated successfully.
         Current function value: -44.994684
         Iterations: 70
         Function evaluations: 183

Finished calculation

C11 = 6373.556246971629 GPa
C12 = 1705.7713769620823 GPa
  B = 3261.699666965264 GPa