G-essence cosmologies with scalar-fermion interactions
  We study the two particular models of g-essence with Yukawa type interactions
between a scalar field $\phi$ and a classical Dirac field $\psi$. For the
homogeneous, isotropic and flat Friedmann-Robertson-Walker universe filled with
the such g-essence, some exact solutions of these models are found. Moreover,
we reconstruct the corresponding scalar and fermionic potentials.
