 #                  a0(A)    V0(A3)   K0(GPa)   mu
Atompaw sc lda     3.421   10.006      261     0.58

Vasp [1]   lda      3.43    10.9       251     0.58

Exp. (dewaele)     3.524   10.945    176+-8   

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

