  The two-dimensional momentum density of Be on the basal GMK plane, i.e. the
line integral of the three-dimensional momentum density along the c-axis, is
reconstructed via the Cormack method from both experimental and theoretical
Compton profiles. It is shown that in the case of Be, despite the momentum
density is highly anisotropic, merely two Compton profiles are sufficient to
reproduce the main features of the momentum density. The analysis of the
reconstructed densities is performed both in the extended and reduced zone
schemes.
