  In Chapter 11 we present Fermi-gas approach for the search of s-wave and
p-wave superfluidity in three-dimensional solutions of He-3 in He-4 and in He-3
submonolayers. In Chapter 13 on the basis of the anisotropic and isotropic t-J
models we study spin-charge separation and confinement in ladder systems and in
high-Tc superconductors.
