 #                  a0(A)    V0(A3)   K0(GPa)   mu
Atompaw sc gga     3.515   10.854      208     0.63

Vasp [1]   gga      3.52    10.9       194     0.61

FLAPW [1]  gga      3.52    10.9       200     0.60

Exp. (dewaele)     3.524   10.945    176+-8   

[1]from Kresse/Joubert PRB 59 1758 (1999)

