  We present in this paper exact analytical expressions for the thermodynamical
properties and Green functions of a certain family of fermionic Ising
spin-glass models with Hubbard interaction, by noticing that their Hamiltonian
is a function of the number operator only. The thermodynamical properties are
mapped to the classical Ghatak-Sherrington spin-glass model while the the
Density of States (DoS) is related to its joint spin-field distribution. We
discuss the presence of the pseudogap in the DoS with the help of this mapping.
