  We apply the generalized two-band model of superconductivity to calculate the
electronic contribution to the specific heat, superconducting gaps and
electron-boson coupling constants of the multi-band layered superconductors
MgB2 and Ba(Fe0.925Co0.075)2As2. For both compounds, the obtained
temperature-behavior of the specific heat well describes the experimental data.
We compare our findings with the "two-band - model" that is frequently used to
calculate the electronic specific heat, and that is applicable only for
superconductors with strong interband scattering ("dirty" enough
superconductors).
