Enter a species  (e.g. Al, Fe): Ca
Enter a hexagonal lattice type (e.g. hcp): hcp
Enter a model name: Morse_Shifted_GirifalcoWeizer_1959MedCutoff_Ca__MO_562200212426_004
Enter hexagonal lattice constants 'a' and 'c' (m): 3.938492516063839e-10, 6.429641817617258e-10